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0.45x+0.05(10-x)=0.10(-19)
We move all terms to the left:
0.45x+0.05(10-x)-(0.10(-19))=0
We add all the numbers together, and all the variables
0.45x+0.05(-1x+10)-(0.10(-19))=0
We add all the numbers together, and all the variables
0.45x+0.05(-1x+10)+1.9=0
We multiply parentheses
0.45x-0.05x+0.5+1.9=0
We add all the numbers together, and all the variables
0.4x+2.4=0
We move all terms containing x to the left, all other terms to the right
0.4x=-2.4
x=-2.4/0.4
x=-5+0.4/0.4
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