-20=r-16

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Solution for -20=r-16 equation: 


Simplifying
-20 = r + -16

Reorder the terms:
-20 = -16 + r

Solving
-20 = -16 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-20 + -1r = -16 + r + -1r

Combine like terms: r + -1r = 0
-20 + -1r = -16 + 0
-20 + -1r = -16

Add '20' to each side of the equation.
-20 + 20 + -1r = -16 + 20

Combine like terms: -20 + 20 = 0
0 + -1r = -16 + 20
-1r = -16 + 20

Combine like terms: -16 + 20 = 4
-1r = 4

Divide each side by '-1'.
r = -4

Simplifying
r = -4

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