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0.4x-0.8(4-x)=2.2
We move all terms to the left:
0.4x-0.8(4-x)-(2.2)=0
We add all the numbers together, and all the variables
0.4x-0.8(-1x+4)-(2.2)=0
We add all the numbers together, and all the variables
0.4x-0.8(-1x+4)-2.2=0
We multiply parentheses
0.4x+0.8x-3.2-2.2=0
We add all the numbers together, and all the variables
1.2x-5.4=0
We move all terms containing x to the left, all other terms to the right
1.2x=5.4
x=5.4/1.2
x=4+0.6/1.2
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