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2(x)+3(4x)=990.50
We move all terms to the left:
2(x)+3(4x)-(990.50)=0
We add all the numbers together, and all the variables
2x+34x-(990.5)=0
We add all the numbers together, and all the variables
36x-990.5=0
We move all terms containing x to the left, all other terms to the right
36x=990.5
x=990.5/36
x=27+1/1.9459459459459
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