4r+4=5r-5

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Solution for 4r+4=5r-5 equation:


Simplifying
4r + 4 = 5r + -5

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

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

Solving
4 + 4r = -5 + 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.
4 + 4r + -5r = -5 + 5r + -5r

Combine like terms: 4r + -5r = -1r
4 + -1r = -5 + 5r + -5r

Combine like terms: 5r + -5r = 0
4 + -1r = -5 + 0
4 + -1r = -5

Add '-4' to each side of the equation.
4 + -4 + -1r = -5 + -4

Combine like terms: 4 + -4 = 0
0 + -1r = -5 + -4
-1r = -5 + -4

Combine like terms: -5 + -4 = -9
-1r = -9

Divide each side by '-1'.
r = 9

Simplifying
r = 9

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