9r+2=3(r-4)

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Solution for 9r+2=3(r-4) equation:


Simplifying
9r + 2 = 3(r + -4)

Reorder the terms:
2 + 9r = 3(r + -4)

Reorder the terms:
2 + 9r = 3(-4 + r)
2 + 9r = (-4 * 3 + r * 3)
2 + 9r = (-12 + 3r)

Solving
2 + 9r = -12 + 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
2 + 9r + -3r = -12 + 3r + -3r

Combine like terms: 9r + -3r = 6r
2 + 6r = -12 + 3r + -3r

Combine like terms: 3r + -3r = 0
2 + 6r = -12 + 0
2 + 6r = -12

Add '-2' to each side of the equation.
2 + -2 + 6r = -12 + -2

Combine like terms: 2 + -2 = 0
0 + 6r = -12 + -2
6r = -12 + -2

Combine like terms: -12 + -2 = -14
6r = -14

Divide each side by '6'.
r = -2.333333333

Simplifying
r = -2.333333333

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