1+6r=-8+9r

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Solution for 1+6r=-8+9r equation:


Simplifying
1 + 6r = -8 + 9r

Solving
1 + 6r = -8 + 9r

Solving for variable 'r'.

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

Add '-9r' to each side of the equation.
1 + 6r + -9r = -8 + 9r + -9r

Combine like terms: 6r + -9r = -3r
1 + -3r = -8 + 9r + -9r

Combine like terms: 9r + -9r = 0
1 + -3r = -8 + 0
1 + -3r = -8

Add '-1' to each side of the equation.
1 + -1 + -3r = -8 + -1

Combine like terms: 1 + -1 = 0
0 + -3r = -8 + -1
-3r = -8 + -1

Combine like terms: -8 + -1 = -9
-3r = -9

Divide each side by '-3'.
r = 3

Simplifying
r = 3

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