15r-4=7r

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Solution for 15r-4=7r equation:


Simplifying
15r + -4 = 7r

Reorder the terms:
-4 + 15r = 7r

Solving
-4 + 15r = 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-4 + 15r + -7r = 7r + -7r

Combine like terms: 15r + -7r = 8r
-4 + 8r = 7r + -7r

Combine like terms: 7r + -7r = 0
-4 + 8r = 0

Add '4' to each side of the equation.
-4 + 4 + 8r = 0 + 4

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

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

Divide each side by '8'.
r = 0.5

Simplifying
r = 0.5

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