5=(0.9-x)+40(0.9-x)

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Solution for 5=(0.9-x)+40(0.9-x) equation: 



5=(0.9-x)+40(0.9-x)

We move all terms to the left:

5-((0.9-x)+40(0.9-x))=0

We add all the numbers together, and all the variables

-((-1x+0.9)+40(-1x+0.9))+5=0



We calculate terms in parentheses: -((-1x+0.9)+40(-1x+0.9)), so:

(-1x+0.9)+40(-1x+0.9)

We multiply parentheses

(-1x+0.9)-40x+36

We get rid of parentheses

-1x-40x+0.9+36

We add all the numbers together, and all the variables

-41x+36.9

Back to the equation:

-(-41x+36.9)



We get rid of parentheses

41x-36.9+5=0

We add all the numbers together, and all the variables

41x-31.9=0

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

41x=31.9

x=31.9/41

x=16.7894736842/21.5789473684

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