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0.4x+0.5=0.30x+1.20
We move all terms to the left:
0.4x+0.5-(0.30x+1.20)=0
We add all the numbers together, and all the variables
0.4x-(0.30x+1.2)+0.5=0
We get rid of parentheses
0.4x-0.30x-1.2+0.5=0
We add all the numbers together, and all the variables
0.1x-0.7=0
We move all terms containing x to the left, all other terms to the right
0.1x=0.7
x=0.7/0.1
x=6+0.1/0.1
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