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olga55 [171]
3 years ago
6

–8(–7r – 7) + 8 =-272​

Mathematics
1 answer:
Mademuasel [1]3 years ago
6 0

Answer:

-8(-7r-7)+8=-272

We move all terms to the left:

-8(-7r-7)+8-(-272)=0

We add all the numbers together, and all the variables

-8(-7r-7)+280=0

We multiply parentheses

56r+56+280=0

We add all the numbers together, and all the variables

56r+336=0

We move all terms containing r to the left, all other terms to the right

56r=-336

r=-336/56

r=-6

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