-4(2m-7)=21-8m

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Solution for -4(2m-7)=21-8m equation: 



-4(2m-7)=21-8m

We move all terms to the left:

-4(2m-7)-(21-8m)=0

We add all the numbers together, and all the variables

-4(2m-7)-(-8m+21)=0

We multiply parentheses

-8m-(-8m+21)+28=0

We get rid of parentheses

-8m+8m-21+28=0

We add all the numbers together, and all the variables

7!=0

There is no solution for this equation

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