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galina1969 [7]
3 years ago
7

A + 3(a − 1) = 3(2 + 1)​

Mathematics
1 answer:
SpyIntel [72]3 years ago
4 0
So times 3 by what’s in the parentheses

a+3a-3=6+3

4a-3=9

4a=12

a=3

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