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122.6+90+2x=180
We move all terms to the left:
122.6+90+2x-(180)=0
We add all the numbers together, and all the variables
2x+32.6=0
We move all terms containing x to the left, all other terms to the right
2x=-32.6
x=-32.6/2
x=-16+0.6/2
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