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0.4(x-7)=1
We move all terms to the left:
0.4(x-7)-(1)=0
We multiply parentheses
0.4x-2.8-1=0
We add all the numbers together, and all the variables
0.4x-3.8=0
We move all terms containing x to the left, all other terms to the right
0.4x=3.8
x=3.8/0.4
x=9+0.2/0.4
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