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0.8x-0.4(4-x)=6.2
We move all terms to the left:
0.8x-0.4(4-x)-(6.2)=0
We add all the numbers together, and all the variables
0.8x-0.4(-1x+4)-(6.2)=0
We add all the numbers together, and all the variables
0.8x-0.4(-1x+4)-6.2=0
We multiply parentheses
0.8x+0.4x-1.6-6.2=0
We add all the numbers together, and all the variables
1.2x-7.8=0
We move all terms containing x to the left, all other terms to the right
1.2x=7.8
x=7.8/1.2
x=6+0.6/1.2
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