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0.4x+0.4=0.7x-0.5
We move all terms to the left:
0.4x+0.4-(0.7x-0.5)=0
We get rid of parentheses
0.4x-0.7x+0.5+0.4=0
We add all the numbers together, and all the variables
-0.3x+0.9=0
We move all terms containing x to the left, all other terms to the right
-0.3x=-0.9
x=-0.9/-0.3
x=3+1.1102230246252E-16/0.3
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