(3x+5x)5=(4-x)7

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Solution for (3x+5x)5=(4-x)7 equation: 



(3x+5x)5=(4-x)7

We move all terms to the left:

(3x+5x)5-((4-x)7)=0

We add all the numbers together, and all the variables

(+8x)5-((-1x+4)7)=0

We multiply parentheses

40x-((-1x+4)7)=0



We calculate terms in parentheses: -((-1x+4)7), so:

(-1x+4)7

We multiply parentheses

-7x+28

Back to the equation:

-(-7x+28)



We get rid of parentheses

40x+7x-28=0

We add all the numbers together, and all the variables

47x-28=0

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

47x=28

x=28/47

x=28/47

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