4(r-5)-5=-5+8r

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Solution for 4(r-5)-5=-5+8r equation:


Simplifying
4(r + -5) + -5 = -5 + 8r

Reorder the terms:
4(-5 + r) + -5 = -5 + 8r
(-5 * 4 + r * 4) + -5 = -5 + 8r
(-20 + 4r) + -5 = -5 + 8r

Reorder the terms:
-20 + -5 + 4r = -5 + 8r

Combine like terms: -20 + -5 = -25
-25 + 4r = -5 + 8r

Solving
-25 + 4r = -5 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
-25 + 4r + -8r = -5 + 8r + -8r

Combine like terms: 4r + -8r = -4r
-25 + -4r = -5 + 8r + -8r

Combine like terms: 8r + -8r = 0
-25 + -4r = -5 + 0
-25 + -4r = -5

Add '25' to each side of the equation.
-25 + 25 + -4r = -5 + 25

Combine like terms: -25 + 25 = 0
0 + -4r = -5 + 25
-4r = -5 + 25

Combine like terms: -5 + 25 = 20
-4r = 20

Divide each side by '-4'.
r = -5

Simplifying
r = -5

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