Answer:
b=12
Step-by-step explanation:
b =12
Subtract 6 from each side
b/4+6-6=9-6
b/4 = 3
Multiply each side by 4
b/4*4 = 3*4
b = 12
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the answer is x = 20/3 + 4/3y
how to: 3x - 4y - 8 = 12
3x = 12 + 4y + 8
3x = 20 + 4y
x = 20/3 + 4/3y
(2v +7)(v -9)
Factors of 2·(-63) = -126 that have a sum of -11 are 7 and -18, so we can rewrite the middle term to -18v+7v. Then we can factor by grouping.
2v^2 -18v +7v -63 = 2v(v -9) +7(v -9)
= (2v +7)(v -9)
