11r-3(r+4)=5(4r-4)-28

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Solution for 11r-3(r+4)=5(4r-4)-28 equation:


Simplifying
11r + -3(r + 4) = 5(4r + -4) + -28

Reorder the terms:
11r + -3(4 + r) = 5(4r + -4) + -28
11r + (4 * -3 + r * -3) = 5(4r + -4) + -28
11r + (-12 + -3r) = 5(4r + -4) + -28

Reorder the terms:
-12 + 11r + -3r = 5(4r + -4) + -28

Combine like terms: 11r + -3r = 8r
-12 + 8r = 5(4r + -4) + -28

Reorder the terms:
-12 + 8r = 5(-4 + 4r) + -28
-12 + 8r = (-4 * 5 + 4r * 5) + -28
-12 + 8r = (-20 + 20r) + -28

Reorder the terms:
-12 + 8r = -20 + -28 + 20r

Combine like terms: -20 + -28 = -48
-12 + 8r = -48 + 20r

Solving
-12 + 8r = -48 + 20r

Solving for variable 'r'.

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

Add '-20r' to each side of the equation.
-12 + 8r + -20r = -48 + 20r + -20r

Combine like terms: 8r + -20r = -12r
-12 + -12r = -48 + 20r + -20r

Combine like terms: 20r + -20r = 0
-12 + -12r = -48 + 0
-12 + -12r = -48

Add '12' to each side of the equation.
-12 + 12 + -12r = -48 + 12

Combine like terms: -12 + 12 = 0
0 + -12r = -48 + 12
-12r = -48 + 12

Combine like terms: -48 + 12 = -36
-12r = -36

Divide each side by '-12'.
r = 3

Simplifying
r = 3

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