2r-5(r-9)=27

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Solution for 2r-5(r-9)=27 equation:


Simplifying
2r + -5(r + -9) = 27

Reorder the terms:
2r + -5(-9 + r) = 27
2r + (-9 * -5 + r * -5) = 27
2r + (45 + -5r) = 27

Reorder the terms:
45 + 2r + -5r = 27

Combine like terms: 2r + -5r = -3r
45 + -3r = 27

Solving
45 + -3r = 27

Solving for variable 'r'.

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

Add '-45' to each side of the equation.
45 + -45 + -3r = 27 + -45

Combine like terms: 45 + -45 = 0
0 + -3r = 27 + -45
-3r = 27 + -45

Combine like terms: 27 + -45 = -18
-3r = -18

Divide each side by '-3'.
r = 6

Simplifying
r = 6

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