5r-21=-49+9r

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Solution for 5r-21=-49+9r equation:


Simplifying
5r + -21 = -49 + 9r

Reorder the terms:
-21 + 5r = -49 + 9r

Solving
-21 + 5r = -49 + 9r

Solving for variable 'r'.

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

Add '-9r' to each side of the equation.
-21 + 5r + -9r = -49 + 9r + -9r

Combine like terms: 5r + -9r = -4r
-21 + -4r = -49 + 9r + -9r

Combine like terms: 9r + -9r = 0
-21 + -4r = -49 + 0
-21 + -4r = -49

Add '21' to each side of the equation.
-21 + 21 + -4r = -49 + 21

Combine like terms: -21 + 21 = 0
0 + -4r = -49 + 21
-4r = -49 + 21

Combine like terms: -49 + 21 = -28
-4r = -28

Divide each side by '-4'.
r = 7

Simplifying
r = 7

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