(-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 = 32
-8r = 32

Divide each side by '-8'.
r = -4

Simplifying
r = -4

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