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0.15x+7.8=8.9.
We move all terms to the left:
0.15x+7.8-(8.9.)=0
We add all the numbers together, and all the variables
0.15x+7.8-0=0
We add all the numbers together, and all the variables
0.15x+7.8=0
We move all terms containing x to the left, all other terms to the right
0.15x=-7.8
x=-7.8/0.15
x=-52
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