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OpenStudy (anonymous):
Three-step equation: x - 21 = 8x - 7
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OpenStudy (muhammad_nauman_umair):
8x-x-7+21=0 7x+14=0 7x=-14 x=-2
OpenStudy (anonymous):
Add the 21 to both sides so: x= 8x+14 Subtract the 8x from both sides so: -7x=14 Divide -7 so: x=-2
OpenStudy (anonymous):
Thank you!
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