-4r-11=4r-21

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Solution for -4r-11=4r-21 equation:


Simplifying
-4r + -11 = 4r + -21

Reorder the terms:
-11 + -4r = 4r + -21

Reorder the terms:
-11 + -4r = -21 + 4r

Solving
-11 + -4r = -21 + 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.
-11 + -4r + -4r = -21 + 4r + -4r

Combine like terms: -4r + -4r = -8r
-11 + -8r = -21 + 4r + -4r

Combine like terms: 4r + -4r = 0
-11 + -8r = -21 + 0
-11 + -8r = -21

Add '11' to each side of the equation.
-11 + 11 + -8r = -21 + 11

Combine like terms: -11 + 11 = 0
0 + -8r = -21 + 11
-8r = -21 + 11

Combine like terms: -21 + 11 = -10
-8r = -10

Divide each side by '-8'.
r = 1.25

Simplifying
r = 1.25

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