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0.4x+87=180
We move all terms to the left:
0.4x+87-(180)=0
We add all the numbers together, and all the variables
0.4x-93=0
We move all terms containing x to the left, all other terms to the right
0.4x=93
x=93/0.4
x=232+0.19999999999999/0.4
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