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2.25(20+x)=337.5
We move all terms to the left:
2.25(20+x)-(337.5)=0
We add all the numbers together, and all the variables
2.25(x+20)-(337.5)=0
We add all the numbers together, and all the variables
2.25(x+20)-337.5=0
We multiply parentheses
2.25x+45-337.5=0
We add all the numbers together, and all the variables
2.25x-292.5=0
We move all terms containing x to the left, all other terms to the right
2.25x=292.5
x=292.5/2.25
x=130
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