-3r-3(4+4r)=-12.2-13.6r

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Solution for -3r-3(4+4r)=-12.2-13.6r equation:


Simplifying
-3r + -3(4 + 4r) = -12.2 + -13.6r
-3r + (4 * -3 + 4r * -3) = -12.2 + -13.6r
-3r + (-12 + -12r) = -12.2 + -13.6r

Reorder the terms:
-12 + -3r + -12r = -12.2 + -13.6r

Combine like terms: -3r + -12r = -15r
-12 + -15r = -12.2 + -13.6r

Solving
-12 + -15r = -12.2 + -13.6r

Solving for variable 'r'.

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

Add '13.6r' to each side of the equation.
-12 + -15r + 13.6r = -12.2 + -13.6r + 13.6r

Combine like terms: -15r + 13.6r = -1.4r
-12 + -1.4r = -12.2 + -13.6r + 13.6r

Combine like terms: -13.6r + 13.6r = 0.0
-12 + -1.4r = -12.2 + 0.0
-12 + -1.4r = -12.2

Add '12' to each side of the equation.
-12 + 12 + -1.4r = -12.2 + 12

Combine like terms: -12 + 12 = 0
0 + -1.4r = -12.2 + 12
-1.4r = -12.2 + 12

Combine like terms: -12.2 + 12 = -0.2
-1.4r = -0.2

Divide each side by '-1.4'.
r = 0.1428571429

Simplifying
r = 0.1428571429

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