r+2=5(r-4)

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Solution for r+2=5(r-4) equation:


Simplifying
r + 2 = 5(r + -4)

Reorder the terms:
2 + r = 5(r + -4)

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

Solving
2 + r = -20 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
2 + r + -5r = -20 + 5r + -5r

Combine like terms: r + -5r = -4r
2 + -4r = -20 + 5r + -5r

Combine like terms: 5r + -5r = 0
2 + -4r = -20 + 0
2 + -4r = -20

Add '-2' to each side of the equation.
2 + -2 + -4r = -20 + -2

Combine like terms: 2 + -2 = 0
0 + -4r = -20 + -2
-4r = -20 + -2

Combine like terms: -20 + -2 = -22
-4r = -22

Divide each side by '-4'.
r = 5.5

Simplifying
r = 5.5

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