-1=18-m

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Solution for -1=18-m equation: 



-1=18-m

We move all terms to the left:

-1-(18-m)=0

We add all the numbers together, and all the variables

-(-1m+18)-1=0

We get rid of parentheses

1m-18-1=0

We add all the numbers together, and all the variables

m-19=0

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

m=19

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