-5r=7-4r+8

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Solution for -5r=7-4r+8 equation: 


Simplifying
-5r = 7 + -4r + 8

Reorder the terms:
-5r = 7 + 8 + -4r

Combine like terms: 7 + 8 = 15
-5r = 15 + -4r

Solving
-5r = 15 + -4r

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '4r' to each side of the equation.
-5r + 4r = 15 + -4r + 4r

Combine like terms: -5r + 4r = -1r
-1r = 15 + -4r + 4r

Combine like terms: -4r + 4r = 0
-1r = 15 + 0
-1r = 15

Divide each side by '-1'.
r = -15

Simplifying
r = -15

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