7(90-x)=3(190-x)-10

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Solution for 7(90-x)=3(190-x)-10 equation: 



7(90-x)=3(190-x)-10

We move all terms to the left:

7(90-x)-(3(190-x)-10)=0

We add all the numbers together, and all the variables

7(-1x+90)-(3(-1x+190)-10)=0

We multiply parentheses

-7x-(3(-1x+190)-10)+630=0



We calculate terms in parentheses: -(3(-1x+190)-10), so:

3(-1x+190)-10

We multiply parentheses

-3x+570-10

We add all the numbers together, and all the variables

-3x+560

Back to the equation:

-(-3x+560)



We get rid of parentheses

-7x+3x-560+630=0

We add all the numbers together, and all the variables

-4x+70=0

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

-4x=-70

x=-70/-4

x=17+1/2

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