45=7(1-3m)-4

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Solution for 45=7(1-3m)-4 equation: 



45=7(1-3m)-4

We move all terms to the left:

45-(7(1-3m)-4)=0

We add all the numbers together, and all the variables

-(7(-3m+1)-4)+45=0



We calculate terms in parentheses: -(7(-3m+1)-4), so:

7(-3m+1)-4

We multiply parentheses

-21m+7-4

We add all the numbers together, and all the variables

-21m+3

Back to the equation:

-(-21m+3)



We get rid of parentheses

21m-3+45=0

We add all the numbers together, and all the variables

21m+42=0

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

21m=-42

m=-42/21

m=-2

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