Question 54232


9-6(4u-1)=u+15

9 - 6*4u + 6*1 = u + 15
9 - 24u +6 = u +15
15 - 24u = u + 15

striking out 15 from both sides we get

-24 u  = u

-24u -u = 0

which gives -25 u = 0  or u = 0




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