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7.8x+8.4+7.3x+7.3=128.95
We move all terms to the left:
7.8x+8.4+7.3x+7.3-(128.95)=0
We add all the numbers together, and all the variables
15.1x-113.25=0
We move all terms containing x to the left, all other terms to the right
15.1x=113.25
x=113.25/15.1
x=7+4.87096774194/9.74193548387
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