4-r=-20

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Solution for 4-r=-20 equation: 


Simplifying
4 + -1r = -20

Solving
4 + -1r = -20

Solving for variable 'r'.

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

Add '-4' to each side of the equation.
4 + -4 + -1r = -20 + -4

Combine like terms: 4 + -4 = 0
0 + -1r = -20 + -4
-1r = -20 + -4

Combine like terms: -20 + -4 = -24
-1r = -24

Divide each side by '-1'.
r = 24

Simplifying
r = 24

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