5(4r-1)-20=155

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Solution for 5(4r-1)-20=155 equation:


Simplifying
5(4r + -1) + -20 = 155

Reorder the terms:
5(-1 + 4r) + -20 = 155
(-1 * 5 + 4r * 5) + -20 = 155
(-5 + 20r) + -20 = 155

Reorder the terms:
-5 + -20 + 20r = 155

Combine like terms: -5 + -20 = -25
-25 + 20r = 155

Solving
-25 + 20r = 155

Solving for variable 'r'.

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

Add '25' to each side of the equation.
-25 + 25 + 20r = 155 + 25

Combine like terms: -25 + 25 = 0
0 + 20r = 155 + 25
20r = 155 + 25

Combine like terms: 155 + 25 = 180
20r = 180

Divide each side by '20'.
r = 9

Simplifying
r = 9

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