-90+5v=2(-5v+-9)+-3v

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Solution for -90+5v=2(-5v+-9)+-3v equation: 



-90+5v=2(-5v+-9)+-3v

We move all terms to the left:

-90+5v-(2(-5v+-9)+-3v)=0

We add all the numbers together, and all the variables

5v-(2(-5v-9)+-3v)-90=0

We use the square of the difference formula

5v-(2(-5v-9)-3v)-90=0



We calculate terms in parentheses: -(2(-5v-9)-3v), so:

2(-5v-9)-3v

We add all the numbers together, and all the variables

-3v+2(-5v-9)

We multiply parentheses

-3v-10v-18

We add all the numbers together, and all the variables

-13v-18

Back to the equation:

-(-13v-18)



We get rid of parentheses

5v+13v+18-90=0

We add all the numbers together, and all the variables

18v-72=0

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

18v=72

v=72/18

v=4

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