-6-9r=-2r-(8r+4)

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Solution for -6-9r=-2r-(8r+4) equation:


Simplifying
-6 + -9r = -2r + -1(8r + 4)

Reorder the terms:
-6 + -9r = -2r + -1(4 + 8r)
-6 + -9r = -2r + (4 * -1 + 8r * -1)
-6 + -9r = -2r + (-4 + -8r)

Reorder the terms:
-6 + -9r = -4 + -2r + -8r

Combine like terms: -2r + -8r = -10r
-6 + -9r = -4 + -10r

Solving
-6 + -9r = -4 + -10r

Solving for variable 'r'.

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

Add '10r' to each side of the equation.
-6 + -9r + 10r = -4 + -10r + 10r

Combine like terms: -9r + 10r = 1r
-6 + 1r = -4 + -10r + 10r

Combine like terms: -10r + 10r = 0
-6 + 1r = -4 + 0
-6 + 1r = -4

Add '6' to each side of the equation.
-6 + 6 + 1r = -4 + 6

Combine like terms: -6 + 6 = 0
0 + 1r = -4 + 6
1r = -4 + 6

Combine like terms: -4 + 6 = 2
1r = 2

Divide each side by '1'.
r = 2

Simplifying
r = 2

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