How do you simplify $- 9 (y - 7)$ $-9(y-7)$ ?

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Answer 1 · 2016-06-05T01:23:48

Use the distributive property to get $- 9 y + 63$ $-9y +63$ .

The distributive property means the you can change $a (b + c)$ $a(b+c)$ into $a b + b c$ $ab + bc$ .

In your problem, that means you can multiple $- 9 y$ $-9y$ by each $y$ $y$ and $- 7$ $-7$ and add them together.

$- 9 \cdot y = - 9 y$ $-9 * y = -9y$ and $- 9 \cdot - 7 = 63$ $-9 * -7 = 63$

So, the simplified answer is $- 9 y + 63$ $-9y + 63$

How do you simplify −9(y−7)-9(y-7) ?