0.90x+0.05(8-x)=0.10(-30)

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Solution for 0.90x+0.05(8-x)=0.10(-30) equation: 



0.90x+0.05(8-x)=0.10(-30)

We move all terms to the left:

0.90x+0.05(8-x)-(0.10(-30))=0

We add all the numbers together, and all the variables

0.90x+0.05(-1x+8)-(0.10(-30))=0

We add all the numbers together, and all the variables

0.90x+0.05(-1x+8)+3=0

We multiply parentheses

0.90x-0.05x+0.4+3=0

We add all the numbers together, and all the variables

0.85x+3.4=0

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

0.85x=-3.4

x=-3.4/0.85

x=-4

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