0.8(x)+x=90

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Solution for 0.8(x)+x=90 equation: 



0.8(x)+x=90

We move all terms to the left:

0.8(x)+x-(90)=0

We add all the numbers together, and all the variables

1.8x-90=0

We move all terms containing x to the left, all other terms to the right

1.8x=90

x=90/1.8

x=50

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