8x + 7 = 55
Subtract 7 from both sides: 8x = 48
Divide both sides by 8: x = 6
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x = 0.125 ( BC - 7 )
8x+7=55 8x=55-7 [subtract 7 from both sides] 8x=48 x=48/8 [divide both sides by 8] x=6
8x+7=55 8x=55-7 8x=48 x=48/8 x=6
7.75 or 7 and 3/4
6