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3 years ago

15

I don’t understand help

1 answer:

Yuliya22 [10]3 years ago

4 0

Answer:

a)-4x+7=9×3

-4x=27-7

x=-20/4

x=-5

b)49r-55r=-52+10

-6r=-42

r=-42/6

r=7

c)-6m+8m-2m=-1-5+6

2m-2m=0

0=0

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