2r-3=16+21

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Solution for 2r-3=16+21 equation: 


Simplifying
2r + -3 = 16 + 21

Reorder the terms:
-3 + 2r = 16 + 21

Combine like terms: 16 + 21 = 37
-3 + 2r = 37

Solving
-3 + 2r = 37

Solving for variable 'r'.

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

Add '3' to each side of the equation.
-3 + 3 + 2r = 37 + 3

Combine like terms: -3 + 3 = 0
0 + 2r = 37 + 3
2r = 37 + 3

Combine like terms: 37 + 3 = 40
2r = 40

Divide each side by '2'.
r = 20

Simplifying
r = 20

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