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

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


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

Reorder the terms:
-15 + -3r = -4(2 + r)
-15 + -3r = (2 * -4 + r * -4)
-15 + -3r = (-8 + -4r)

Solving
-15 + -3r = -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.
-15 + -3r + 4r = -8 + -4r + 4r

Combine like terms: -3r + 4r = 1r
-15 + 1r = -8 + -4r + 4r

Combine like terms: -4r + 4r = 0
-15 + 1r = -8 + 0
-15 + 1r = -8

Add '15' to each side of the equation.
-15 + 15 + 1r = -8 + 15

Combine like terms: -15 + 15 = 0
0 + 1r = -8 + 15
1r = -8 + 15

Combine like terms: -8 + 15 = 7
1r = 7

Divide each side by '1'.
r = 7

Simplifying
r = 7

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