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2x+8=90*
We move all terms to the left:
2x+8-(90*)=0
We add all the numbers together, and all the variables
2x+8-0=0
We add all the numbers together, and all the variables
2x+8=0
We move all terms containing x to the left, all other terms to the right
2x=-8
x=-8/2
x=-4
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