m*7=-4*7

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Solution for m*7=-4*7 equation: 



m*7=-4*7

We move all terms to the left:

m*7-(-4*7)=0

We add all the numbers together, and all the variables

m*7-(-28)=0

We add all the numbers together, and all the variables

m*7+28=0

Wy multiply elements

7m+28=0

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

7m=-28

m=-28/7

m=-4

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