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Nady [450]
3 years ago
7

7b = 4(b + 30) b=40, plug it in and show how you solved it

Mathematics
1 answer:
Colt1911 [192]3 years ago
8 0
7b=4(b+30)

Remove the parentheses

7b=4b+120

Move the variable to the left

7b-4b=120

Collect the terms

3b=120

Divide both side

Solution

b=40
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