4+9r-16r+18=

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Solution for 4+9r-16r+18= equation:


Simplifying
4 + 9r + -16r + 18 = 0

Reorder the terms:
4 + 18 + 9r + -16r = 0

Combine like terms: 4 + 18 = 22
22 + 9r + -16r = 0

Combine like terms: 9r + -16r = -7r
22 + -7r = 0

Solving
22 + -7r = 0

Solving for variable 'r'.

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

Add '-22' to each side of the equation.
22 + -22 + -7r = 0 + -22

Combine like terms: 22 + -22 = 0
0 + -7r = 0 + -22
-7r = 0 + -22

Combine like terms: 0 + -22 = -22
-7r = -22

Divide each side by '-7'.
r = 3.142857143

Simplifying
r = 3.142857143

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