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2 - 3b = 7b + 12

Let us introduce equal terms (3b - 12 in this specific case) on each side (left and right) of the equal sign, so that the 'b' term is all alone on one side of the equal sign.

2 - 3b + (3 b - 12) = 7b + 12 + (3 b - 12)

-10 = 10b

b = -1

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โˆ™ 2009-05-17 00:44:50
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Q: 2-3b equals 7b plus 12
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