r+7=3r

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Solution for r+7=3r equation:


Simplifying
r + 7 = 3r

Reorder the terms:
7 + r = 3r

Solving
7 + r = 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
7 + r + -3r = 3r + -3r

Combine like terms: r + -3r = -2r
7 + -2r = 3r + -3r

Combine like terms: 3r + -3r = 0
7 + -2r = 0

Add '-7' to each side of the equation.
7 + -7 + -2r = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -2r = 0 + -7
-2r = 0 + -7

Combine like terms: 0 + -7 = -7
-2r = -7

Divide each side by '-2'.
r = 3.5

Simplifying
r = 3.5

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