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0.4(5x-12)+0.5x=14.2
We move all terms to the left:
0.4(5x-12)+0.5x-(14.2)=0
We add all the numbers together, and all the variables
0.5x+0.4(5x-12)-14.2=0
We multiply parentheses
0.5x+2x-4.8-14.2=0
We add all the numbers together, and all the variables
2.5x-19=0
We move all terms containing x to the left, all other terms to the right
2.5x=19
x=19/2.5
x=7+1/1.6666666666667
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