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9(26.25-9x/4)+4x=90
We move all terms to the left:
9(26.25-9x/4)+4x-(90)=0
We add all the numbers together, and all the variables
9(-9x/4+26.25)+4x-90=0
We add all the numbers together, and all the variables
4x+9(-9x/4+26.25)-90=0
We multiply parentheses
4x-81x+236.25-90=0
We add all the numbers together, and all the variables
-77x+146.25=0
We move all terms containing x to the left, all other terms to the right
-77x=-146.25
x=-146.25/-77
x=1+55.4/61.6
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