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Ray Of Light [21]
3 years ago
9

3a + 21 = 7 - 4a what's the answer

Mathematics
2 answers:
denis23 [38]3 years ago
8 0
After simplifying a= -2
scoundrel [369]3 years ago
5 0
3a + 21 = 7 - 4a

3a + 4a = 7 - 21

7 a = -14

a = - 14 / 7

a = - 2

hope this helps!
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