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3 years ago

I could use a little help with this one. i'm rusty. -3(x+2)-7 = 5x + 7

Mathematics

2 answers:

Pie3 years ago

7 0

Answer:

-3(x+2)-7 = 5x + 7

-3x - 6 - 7 = 5x + 7

-3x - 13 = 5x + 7

-20 = 8x

x = -2.5

Lina20 [59]3 years ago

6 0

Answer:

Exact form = x=-5/2

Decimal form = x=-2.5

Mixed number form = x=-2 1/2

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

-3(x+2)-7 = 5x + 7

-3x - 6 - 7 = 5x + 7

-3x - 13 = 5x + 7

-20 = 8x

Divide both sides by 8 to get x by itself

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