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Pham
Mathematics
1 June, 21:41
За + 4a = - 21 Solve the problem
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Rory Garcia
1 June, 21:47
0
a = - 3
Step-by-step explanation:
3a + 4a = - 21
3a + 4a = 7a
7a = - 21 Divide both side with 7
-21 / 7 = - 3
a = - 3
To make it true ...
3 (-3) + 4 (-3) =
-9 + (-12) = - 21
-21 = - 21
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