75=3(10+x)

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Solution for 75=3(10+x) equation: 



75=3(10+x)

We move all terms to the left:

75-(3(10+x))=0

We add all the numbers together, and all the variables

-(3(x+10))+75=0



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

3(x+10)

We multiply parentheses

3x+30

Back to the equation:

-(3x+30)



We get rid of parentheses

-3x-30+75=0

We add all the numbers together, and all the variables

-3x+45=0

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

-3x=-45

x=-45/-3

x=+15

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