-2(r+1)-4(4r+7)-15r=

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Solution for -2(r+1)-4(4r+7)-15r= equation:


Simplifying
-2(r + 1) + -4(4r + 7) + -15r = 0

Reorder the terms:
-2(1 + r) + -4(4r + 7) + -15r = 0
(1 * -2 + r * -2) + -4(4r + 7) + -15r = 0
(-2 + -2r) + -4(4r + 7) + -15r = 0

Reorder the terms:
-2 + -2r + -4(7 + 4r) + -15r = 0
-2 + -2r + (7 * -4 + 4r * -4) + -15r = 0
-2 + -2r + (-28 + -16r) + -15r = 0

Reorder the terms:
-2 + -28 + -2r + -16r + -15r = 0

Combine like terms: -2 + -28 = -30
-30 + -2r + -16r + -15r = 0

Combine like terms: -2r + -16r = -18r
-30 + -18r + -15r = 0

Combine like terms: -18r + -15r = -33r
-30 + -33r = 0

Solving
-30 + -33r = 0

Solving for variable 'r'.

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

Add '30' to each side of the equation.
-30 + 30 + -33r = 0 + 30

Combine like terms: -30 + 30 = 0
0 + -33r = 0 + 30
-33r = 0 + 30

Combine like terms: 0 + 30 = 30
-33r = 30

Divide each side by '-33'.
r = -0.9090909091

Simplifying
r = -0.9090909091

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