3r+4=a

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Solution for 3r+4=a equation: 


Simplifying
3r + 4 = a

Reorder the terms:
4 + 3r = a

Solving
4 + 3r = a

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 = -4 + a

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

Divide each side by '3'.
r = -1.333333333 + 0.3333333333a

Simplifying
r = -1.333333333 + 0.3333333333a

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