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0.3(4+x)=4
We move all terms to the left:
0.3(4+x)-(4)=0
We add all the numbers together, and all the variables
0.3(x+4)-4=0
We multiply parentheses
0.3x+1.2-4=0
We add all the numbers together, and all the variables
0.3x-2.8=0
We move all terms containing x to the left, all other terms to the right
0.3x=2.8
x=2.8/0.3
x=9+0.1/0.3
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