0
Anonymous
b= -162
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5b = 21 + 4b 5b - 4b = 21 + 4b - 4b b = 21
5b = 8 b = 8/5 or 1.6
-86
2a-6a-a=b+4b-4b -5a=5b-4b -5a=1b a=-5 b=1
10a + 5b