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2x+0.2(4-x)=2.8
We move all terms to the left:
2x+0.2(4-x)-(2.8)=0
We add all the numbers together, and all the variables
2x+0.2(-1x+4)-(2.8)=0
We add all the numbers together, and all the variables
2x+0.2(-1x+4)-2.8=0
We multiply parentheses
2x-0.2x+0.8-2.8=0
We add all the numbers together, and all the variables
1.8x-2=0
We move all terms containing x to the left, all other terms to the right
1.8x=2
x=2/1.8
x=1+0.2/1.8
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