7r+3r-30=0

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Solution for 7r+3r-30=0 equation:


Simplifying
7r + 3r + -30 = 0

Reorder the terms:
-30 + 7r + 3r = 0

Combine like terms: 7r + 3r = 10r
-30 + 10r = 0

Solving
-30 + 10r = 0

Solving for variable 'r'.

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

Add '30' to each side of the equation.
-30 + 30 + 10r = 0 + 30

Combine like terms: -30 + 30 = 0
0 + 10r = 0 + 30
10r = 0 + 30

Combine like terms: 0 + 30 = 30
10r = 30

Divide each side by '10'.
r = 3

Simplifying
r = 3

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