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15.4x-5.6x=52.4
We move all terms to the left:
15.4x-5.6x-(52.4)=0
We add all the numbers together, and all the variables
9.8x-52.4=0
We move all terms containing x to the left, all other terms to the right
9.8x=52.4
x=52.4/9.8
x=5+1/2.8823529411765
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