7r+9=5r-1

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Solution for 7r+9=5r-1 equation:


Simplifying
7r + 9 = 5r + -1

Reorder the terms:
9 + 7r = 5r + -1

Reorder the terms:
9 + 7r = -1 + 5r

Solving
9 + 7r = -1 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
9 + 7r + -5r = -1 + 5r + -5r

Combine like terms: 7r + -5r = 2r
9 + 2r = -1 + 5r + -5r

Combine like terms: 5r + -5r = 0
9 + 2r = -1 + 0
9 + 2r = -1

Add '-9' to each side of the equation.
9 + -9 + 2r = -1 + -9

Combine like terms: 9 + -9 = 0
0 + 2r = -1 + -9
2r = -1 + -9

Combine like terms: -1 + -9 = -10
2r = -10

Divide each side by '2'.
r = -5

Simplifying
r = -5

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