2r-9(9r+7)=

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Solution for 2r-9(9r+7)= equation:


Simplifying
2r + -9(9r + 7) = 0

Reorder the terms:
2r + -9(7 + 9r) = 0
2r + (7 * -9 + 9r * -9) = 0
2r + (-63 + -81r) = 0

Reorder the terms:
-63 + 2r + -81r = 0

Combine like terms: 2r + -81r = -79r
-63 + -79r = 0

Solving
-63 + -79r = 0

Solving for variable 'r'.

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

Add '63' to each side of the equation.
-63 + 63 + -79r = 0 + 63

Combine like terms: -63 + 63 = 0
0 + -79r = 0 + 63
-79r = 0 + 63

Combine like terms: 0 + 63 = 63
-79r = 63

Divide each side by '-79'.
r = -0.7974683544

Simplifying
r = -0.7974683544

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