2a - 4y = 3a - 8a - 5y 7a = -y
a = -(y/7)
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3a = 1a = 1/3 (a third)
If a + b = 6, what is the value of 3a + 3b?
3a - 7 = -28 Therefore, 3a = -21 a = -21/3 Therefore, a = -7
12
p=b+3a+c p-3a-c=b+3a-3a+c-c p-3a-c=b b=p-3a-c