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Braniac
Mathematics
19 April, 15:25
9 (30 + a) = 99 find a
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Alondra Wang
19 April, 15:48
0
-19
Step-by-step explanation:
1. multiply 9 and 30 to get 270
2. multiply 9 and a to get 9a
3. your equation would look like this 270+9a = 99
4. then subtract 270 from both sides to get - 171
5. the equation looks like this 9a = - 171
6. then divide 9 from both sides
7. the answer is a = - 19
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