0.9(x+90)+0.1(x-80)=163

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Solution for 0.9(x+90)+0.1(x-80)=163 equation: 



0.9(x+90)+0.1(x-80)=163

We move all terms to the left:

0.9(x+90)+0.1(x-80)-(163)=0

We multiply parentheses

0.9x+0.1x+81-8-163=0

We add all the numbers together, and all the variables

x-90=0

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

x=90

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