4r+-9r+-7+9=

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


Simplifying
4r + -9r + -7 + 9 = 0

Reorder the terms:
-7 + 9 + 4r + -9r = 0

Combine like terms: -7 + 9 = 2
2 + 4r + -9r = 0

Combine like terms: 4r + -9r = -5r
2 + -5r = 0

Solving
2 + -5r = 0

Solving for variable 'r'.

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

Add '-2' to each side of the equation.
2 + -2 + -5r = 0 + -2

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

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

Divide each side by '-5'.
r = 0.4

Simplifying
r = 0.4

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