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0.1x+54+0.3x+52=180
We move all terms to the left:
0.1x+54+0.3x+52-(180)=0
We add all the numbers together, and all the variables
0.4x-74=0
We move all terms containing x to the left, all other terms to the right
0.4x=74
x=74/0.4
x=185
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