7x+2x=10(1-x)-10(1+8x)

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Solution for 7x+2x=10(1-x)-10(1+8x) equation: 



7x+2x=10(1-x)-10(1+8x)

We move all terms to the left:

7x+2x-(10(1-x)-10(1+8x))=0

We add all the numbers together, and all the variables

7x+2x-(10(-1x+1)-10(8x+1))=0

We add all the numbers together, and all the variables

9x-(10(-1x+1)-10(8x+1))=0



We calculate terms in parentheses: -(10(-1x+1)-10(8x+1)), so:

10(-1x+1)-10(8x+1)

We multiply parentheses

-10x-80x+10-10

We add all the numbers together, and all the variables

-90x

Back to the equation:

-(-90x)



We get rid of parentheses

9x+90x=0

We add all the numbers together, and all the variables

99x=0

x=0/99

x=0

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