Seudónimo Seudónimo
  • 15-09-2017
  • Mathematics
contestada

What is the value of m? 12+(7+m)=30

11
19
25
35
49

Respuesta :

Selina13 Selina13
  • 15-09-2017
the answer is 11
hope that helps
Answer Link
temp102 temp102
  • 15-09-2017
we can do anything to an equation as long as we do it to both sides
remember the associative property of addition

a+(b+c)=(a+b)+c
so
12+(7+m)=(12+7)+m=19+m

19+m=30
minus 19 both sides
19-19+m=30-19
0+m=11
m=11
Answer Link

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