9r-(5r+8)=8

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Solution for 9r-(5r+8)=8 equation:


Simplifying
9r + -1(5r + 8) = 8

Reorder the terms:
9r + -1(8 + 5r) = 8
9r + (8 * -1 + 5r * -1) = 8
9r + (-8 + -5r) = 8

Reorder the terms:
-8 + 9r + -5r = 8

Combine like terms: 9r + -5r = 4r
-8 + 4r = 8

Solving
-8 + 4r = 8

Solving for variable 'r'.

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

Add '8' to each side of the equation.
-8 + 8 + 4r = 8 + 8

Combine like terms: -8 + 8 = 0
0 + 4r = 8 + 8
4r = 8 + 8

Combine like terms: 8 + 8 = 16
4r = 16

Divide each side by '4'.
r = 4

Simplifying
r = 4

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