0.40x+0.05(20-x)=0.10(-18)

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Solution for 0.40x+0.05(20-x)=0.10(-18) equation: 



0.40x+0.05(20-x)=0.10(-18)

We move all terms to the left:

0.40x+0.05(20-x)-(0.10(-18))=0

We add all the numbers together, and all the variables

0.40x+0.05(-1x+20)-(0.10(-18))=0

We add all the numbers together, and all the variables

0.40x+0.05(-1x+20)+1.8=0

We multiply parentheses

0.40x-0.05x+1+1.8=0

We add all the numbers together, and all the variables

0.35x+2.8=0

We move all terms containing x to the left, all other terms to the right

0.35x=-2.8

x=-2.8/0.35

x=-8

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