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40=-2.9(x)+49.2
We move all terms to the left:
40-(-2.9(x)+49.2)=0
We get rid of parentheses
2.9x-49.2+40=0
We add all the numbers together, and all the variables
2.9x-9.2=0
We move all terms containing x to the left, all other terms to the right
2.9x=9.2
x=9.2/2.9
x=3+0.5/2.9
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