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0.7(x)=0.42
We move all terms to the left:
0.7(x)-(0.42)=0
We add all the numbers together, and all the variables
0.7x-0.42=0
We move all terms containing x to the left, all other terms to the right
0.7x=0.42
x=0.42/0.7
x=0.42/0.7
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