-6r-5=7r+21

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Solution for -6r-5=7r+21 equation:


Simplifying
-6r + -5 = 7r + 21

Reorder the terms:
-5 + -6r = 7r + 21

Reorder the terms:
-5 + -6r = 21 + 7r

Solving
-5 + -6r = 21 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-5 + -6r + -7r = 21 + 7r + -7r

Combine like terms: -6r + -7r = -13r
-5 + -13r = 21 + 7r + -7r

Combine like terms: 7r + -7r = 0
-5 + -13r = 21 + 0
-5 + -13r = 21

Add '5' to each side of the equation.
-5 + 5 + -13r = 21 + 5

Combine like terms: -5 + 5 = 0
0 + -13r = 21 + 5
-13r = 21 + 5

Combine like terms: 21 + 5 = 26
-13r = 26

Divide each side by '-13'.
r = -2

Simplifying
r = -2

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