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-21-1.9x=54.6+3.5x
We move all terms to the left:
-21-1.9x-(54.6+3.5x)=0
We add all the numbers together, and all the variables
-1.9x-(3.5x+54.6)-21=0
We get rid of parentheses
-1.9x-3.5x-54.6-21=0
We add all the numbers together, and all the variables
-5.4x-75.6=0
We move all terms containing x to the left, all other terms to the right
-5.4x=75.6
x=75.6/-5.4
x=-13+1/1
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