-9(3r+7)+4r=23

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Solution for -9(3r+7)+4r=23 equation:


Simplifying
-9(3r + 7) + 4r = 23

Reorder the terms:
-9(7 + 3r) + 4r = 23
(7 * -9 + 3r * -9) + 4r = 23
(-63 + -27r) + 4r = 23

Combine like terms: -27r + 4r = -23r
-63 + -23r = 23

Solving
-63 + -23r = 23

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 + -23r = 23 + 63

Combine like terms: -63 + 63 = 0
0 + -23r = 23 + 63
-23r = 23 + 63

Combine like terms: 23 + 63 = 86
-23r = 86

Divide each side by '-23'.
r = -3.739130435

Simplifying
r = -3.739130435

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