`person( 1 )` ate `plural( A, "slice" )` of `pizza( 1 )`, and `person( 2 )`
ate `plural( B, "slice" )`.

If there were initially `TOTAL` slices, what fraction of the `pizza( 1 )` was eaten?

`(A + B) / TOTAL`

`\text{fraction of `

`pizza( 1 )` eaten} = \dfrac{\text{number of slices eaten}}{\text{number slices total}}

They ate `\color{#6495ED}{`

out of `A + B`}

slices.`TOTAL`

init({
range: [ [-2, 2], [-2, 2] ],
scale: 25
});
var eaten = A + B;
piechart( [ eaten, TOTAL - eaten ], [ "#6495ED", "#FFA500" ], 2 );

They ate `\dfrac{`

of the `A + B`}{`TOTAL`}`pizza( 1 )`.

`person( 1 )` ate `plural( A, "slice" )` of `pizza( 1 )`, and `person( 2 )`
ate `plural( B, "slice" )`.

If there were `plural(LEFT, "slice")` remaining, what fraction of the `pizza( 1 )` was eaten?

`(A + B) / TOTAL`

`\text{fraction of `

`pizza( 1 )` eaten} = \dfrac{\text{number of slices eaten}}{\text{number slices total}}

Since they ate `A + B` slices of `pizza( 1 )` with `plural( LEFT, "slice" )` remaining,
they must have begun with `TOTAL` slices.

They ate `\color{#6495ED}{`

out of `A + B`}

slices.`TOTAL`

init({
range: [ [-2, 2], [-2, 2] ],
scale: 25
});
var eaten = A + B;
piechart( [ eaten, TOTAL - eaten ], [ "#6495ED", "#FFA500" ], 2 );

They ate `\dfrac{`

of the `A + B`}{`TOTAL`}`pizza( 1 )`.

`person( 1 )` ate `plural( A, "slice" )` of `pizza( 1 )`, and `person( 2 )`
ate `plural( B, "slice" )`.

If `person( 1 )` ate `\dfrac{`

of the `A`}{`TOTAL`}`pizza( 1 )`,
what fraction of the `pizza( 1 )` was eaten?

`(A + B) / TOTAL`

If `plural( A, "slice")` represent`A > 1 ? "" : "s"`
`\dfrac{`

of the `A`}{`TOTAL`}`pizza( 1 )`, there must have been a total of
`TOTAL` slices.

`\text{fraction of `

`pizza( 1 )` eaten} = \dfrac{\text{number of slices eaten}}{\text{number slices total}}

They ate `\color{#6495ED}{`

out of `A + B`}

slices.`TOTAL`

init({
range: [ [-2, 2], [-2, 2] ],
scale: 25
});
var eaten = A + B;
piechart( [ eaten, TOTAL - eaten ], [ "#6495ED", "#FFA500" ], 2 );

They ate `\dfrac{`

of the `A + B`}{`TOTAL`}`pizza( 1 )`.

`person( 1 )` ate `plural( A, "slice" )` of `pizza( 1 )`, and
`person( 2 )` ate `plural( B, "slice" )`.

If there were initially `TOTAL` slices, what fraction of the `pizza( 1 )` is remaining?

`LEFT / TOTAL`

`\text{fraction of `

`pizza( 1 )` remaining} = \dfrac{\text{number of slices remaining}}{\text{number slices total}}

Together they ate `A + B` slices, which leaves `LEFT` out of `TOTAL` slices remaining.

init({
range: [ [-2, 2], [-2, 2] ],
scale: 25
});
var remaining = TOTAL - A - B;
piechart( [ remaining, TOTAL - remaining ], [ "#FFA500", "#6495ED" ], 2 );

There is `\dfrac{`

of the `LEFT`}{`TOTAL`}`pizza( 1 )` remaining.

`person( 1 )` ate `plural( A, "slice" )` of `pizza( 1 )`, and
`person( 2 )` ate `plural( B, "slice" )`.

If `person( 1 )` ate `\dfrac{`

of the `A`}{`TOTAL`}`pizza( 1 )`,
what fraction of the `pizza( 1 )` is remaining?

`LEFT / TOTAL`

If `plural( A, "slice" )` represent`A > 1 ? "" : "s"`
`\dfrac{`

of the `A`}{`TOTAL`}`pizza( 1 )`,
there must have been a total of `TOTAL` slices.

`\text{fraction of `

`pizza( 1 )` remaining} = \dfrac{\text{number of slices remaining}}{\text{number slices total}}

Together they ate `A + B` slices, which leaves `LEFT` out of `TOTAL` slices remaining.

init({
range: [ [-2, 2], [-2, 2] ],
scale: 25
});
var remaining = TOTAL - A - B;
piechart( [ remaining, TOTAL - remaining ], [ "#FFA500", "#6495ED" ], 2 );

There is `\dfrac{`

of the `LEFT`}{`TOTAL`}`pizza( 1 )` remaining.