carolinekeogh11 carolinekeogh11
  • 15-09-2017
  • Mathematics
contestada

simplify -9 - (12 -3x)

Respuesta :

jmtorres3423
jmtorres3423 jmtorres3423
  • 15-09-2017
Start by distributing the negative sign:\
-9-12+3x
Simplify:
-21+3x
Answer Link
SATnoSTOP
SATnoSTOP SATnoSTOP
  • 15-09-2017
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
Answer Link

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