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15x2 - 56 = 88 + 6x2

Subtract 6x2 from each side:

9x2 - 56 = 88

Add 56 to each side:

9x2 = 144

Divide each side by 9:

x2 = 144/9

Take the square root of each side:

x = 12/3 = 4

x = -4

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โˆ™ 2010-03-23 00:07:28
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Q: 15x2 - 56 equals 88 plus 6x2?
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