12r+16=-16r+-40

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Solution for 12r+16=-16r+-40 equation:


Simplifying
12r + 16 = -16r + -40

Reorder the terms:
16 + 12r = -16r + -40

Reorder the terms:
16 + 12r = -40 + -16r

Solving
16 + 12r = -40 + -16r

Solving for variable 'r'.

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

Add '16r' to each side of the equation.
16 + 12r + 16r = -40 + -16r + 16r

Combine like terms: 12r + 16r = 28r
16 + 28r = -40 + -16r + 16r

Combine like terms: -16r + 16r = 0
16 + 28r = -40 + 0
16 + 28r = -40

Add '-16' to each side of the equation.
16 + -16 + 28r = -40 + -16

Combine like terms: 16 + -16 = 0
0 + 28r = -40 + -16
28r = -40 + -16

Combine like terms: -40 + -16 = -56
28r = -56

Divide each side by '28'.
r = -2

Simplifying
r = -2

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