3r-4=77

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Solution for 3r-4=77 equation: 


Simplifying
3r + -4 = 77

Reorder the terms:
-4 + 3r = 77

Solving
-4 + 3r = 77

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 + 3r = 77 + 4

Combine like terms: -4 + 4 = 0
0 + 3r = 77 + 4
3r = 77 + 4

Combine like terms: 77 + 4 = 81
3r = 81

Divide each side by '3'.
r = 27

Simplifying
r = 27

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