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olasank [31]
3 years ago
5

7 + 2 (a -3) = -9 What is the answer do this?

Mathematics
1 answer:
Snezhnost [94]3 years ago
6 0

Answer:

7+2(a-3)=-9

a= -5

Step-by-step explanation:

7+2(a-3)=-9

<u>Distribute</u><u> </u> 2 through the parentheses

<u>Example</u><u>:</u> 7+2a-6=-9

Next: 7+2a-6=-9

Subtract the numbers

1+2a=-9

Move constant to the right hand side and change its sighn 2a=-9-1

<u>2a</u><u>=</u><u>-9-1</u>

<u>Calculate</u><u> </u><u>the</u><u> </u><u>difference</u><u> </u>

2a=-10

<u>Divide</u><u> </u><u>both</u><u> </u><u>sides</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>equation</u><u> </u><u>by</u><u> </u><u>2</u>

<u>Answer</u><u>:</u><u> </u>a=- -5

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