-4+3r+8=7

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Solution for -4+3r+8=7 equation: 


Simplifying
-4 + 3r + 8 = 7

Reorder the terms:
-4 + 8 + 3r = 7

Combine like terms: -4 + 8 = 4
4 + 3r = 7

Solving
4 + 3r = 7

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 = 7 + -4

Combine like terms: 4 + -4 = 0
0 + 3r = 7 + -4
3r = 7 + -4

Combine like terms: 7 + -4 = 3
3r = 3

Divide each side by '3'.
r = 1

Simplifying
r = 1

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