9(r+4)-8=55

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Solution for 9(r+4)-8=55 equation:


Simplifying
9(r + 4) + -8 = 55

Reorder the terms:
9(4 + r) + -8 = 55
(4 * 9 + r * 9) + -8 = 55
(36 + 9r) + -8 = 55

Reorder the terms:
36 + -8 + 9r = 55

Combine like terms: 36 + -8 = 28
28 + 9r = 55

Solving
28 + 9r = 55

Solving for variable 'r'.

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

Add '-28' to each side of the equation.
28 + -28 + 9r = 55 + -28

Combine like terms: 28 + -28 = 0
0 + 9r = 55 + -28
9r = 55 + -28

Combine like terms: 55 + -28 = 27
9r = 27

Divide each side by '9'.
r = 3

Simplifying
r = 3

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