-4-7r=-9r

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Solution for -4-7r=-9r equation:


Simplifying
-4 + -7r = -9r

Solving
-4 + -7r = -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.
-4 + -7r + 9r = -9r + 9r

Combine like terms: -7r + 9r = 2r
-4 + 2r = -9r + 9r

Combine like terms: -9r + 9r = 0
-4 + 2r = 0

Add '4' to each side of the equation.
-4 + 4 + 2r = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 2r = 0 + 4
2r = 0 + 4

Combine like terms: 0 + 4 = 4
2r = 4

Divide each side by '2'.
r = 2

Simplifying
r = 2

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