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0.40x+5(12-x)=10(-29)
We move all terms to the left:
0.40x+5(12-x)-(10(-29))=0
We add all the numbers together, and all the variables
0.40x+5(-1x+12)-(10(-29))=0
We add all the numbers together, and all the variables
0.40x+5(-1x+12)+290=0
We multiply parentheses
0.40x-5x+60+290=0
We add all the numbers together, and all the variables
-4.6x+350=0
We move all terms containing x to the left, all other terms to the right
-4.6x=-350
x=-350/-4.6
x=76+0.4/4.6
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