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42x-28x=-10+25
We move all terms to the left:
42x-28x-(-10+25)=0
We add all the numbers together, and all the variables
42x-28x-15=0
We add all the numbers together, and all the variables
14x-15=0
We move all terms containing x to the left, all other terms to the right
14x=15
x=15/14
x=1+1/14
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