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0.4(x-7)=3
We move all terms to the left:
0.4(x-7)-(3)=0
We multiply parentheses
0.4x-2.8-3=0
We add all the numbers together, and all the variables
0.4x-5.8=0
We move all terms containing x to the left, all other terms to the right
0.4x=5.8
x=5.8/0.4
x=14+0.2/0.4
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