4=r+8

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Solution for 4=r+8 equation:


Simplifying
4 = r + 8

Reorder the terms:
4 = 8 + r

Solving
4 = 8 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
4 + -1r = 8 + r + -1r

Combine like terms: r + -1r = 0
4 + -1r = 8 + 0
4 + -1r = 8

Add '-4' to each side of the equation.
4 + -4 + -1r = 8 + -4

Combine like terms: 4 + -4 = 0
0 + -1r = 8 + -4
-1r = 8 + -4

Combine like terms: 8 + -4 = 4
-1r = 4

Divide each side by '-1'.
r = -4

Simplifying
r = -4

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