2r+9-7r=25

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Solution for 2r+9-7r=25 equation:


Simplifying
2r + 9 + -7r = 25

Reorder the terms:
9 + 2r + -7r = 25

Combine like terms: 2r + -7r = -5r
9 + -5r = 25

Solving
9 + -5r = 25

Solving for variable 'r'.

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

Add '-9' to each side of the equation.
9 + -9 + -5r = 25 + -9

Combine like terms: 9 + -9 = 0
0 + -5r = 25 + -9
-5r = 25 + -9

Combine like terms: 25 + -9 = 16
-5r = 16

Divide each side by '-5'.
r = -3.2

Simplifying
r = -3.2

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