-4=10-2r

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Solution for -4=10-2r equation: 



-4=10-2r

We move all terms to the left:

-4-(10-2r)=0

We add all the numbers together, and all the variables

-(-2r+10)-4=0

We get rid of parentheses

2r-10-4=0

We add all the numbers together, and all the variables

2r-14=0

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

2r=14

r=14/2

r=7

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