-3+15=4(r-2)

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Solution for -3+15=4(r-2) equation:


Simplifying
-3 + 15 = 4(r + -2)

Combine like terms: -3 + 15 = 12
12 = 4(r + -2)

Reorder the terms:
12 = 4(-2 + r)
12 = (-2 * 4 + r * 4)
12 = (-8 + 4r)

Solving
12 = -8 + 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.
12 + -4r = -8 + 4r + -4r

Combine like terms: 4r + -4r = 0
12 + -4r = -8 + 0
12 + -4r = -8

Add '-12' to each side of the equation.
12 + -12 + -4r = -8 + -12

Combine like terms: 12 + -12 = 0
0 + -4r = -8 + -12
-4r = -8 + -12

Combine like terms: -8 + -12 = -20
-4r = -20

Divide each side by '-4'.
r = 5

Simplifying
r = 5

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