2r+4=42

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Solution for 2r+4=42 equation: 


Simplifying
2r + 4 = 42

Reorder the terms:
4 + 2r = 42

Solving
4 + 2r = 42

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 + 2r = 42 + -4

Combine like terms: 4 + -4 = 0
0 + 2r = 42 + -4
2r = 42 + -4

Combine like terms: 42 + -4 = 38
2r = 38

Divide each side by '2'.
r = 19

Simplifying
r = 19

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