Answer:
12
Explanation:
4u - 8u = -63 + 15 ( collecting like terms)
-4u = -48
u = 12
4u - 8u - 15 = -63
Step 1: Combine 4u and -8u
-4u - 15 = -63
Step 2: Add 15 to both -15 and -63
Step 3: Divide both -4u and -48 by -4
I hope this helps! c:
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