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zimovet [89]
4 years ago
7

Simplify -9 - (12 -3x)

Mathematics
2 answers:
Alexeev081 [22]4 years ago
6 0
Start by distributing the negative sign:\
-9-12+3x
Simplify:
-21+3x
lora16 [44]4 years ago
3 0
First, distribute the -1

-9-12+3x

Then subtract the -9 and -12

-21 + 3x

Add 21 to both sides*

21 = 3x

Divide

x = 7

*I would assume that 0= -9-(12-3x) as it is not mentioned in the description
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