15+3r-4=1+7r

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Solution for 15+3r-4=1+7r equation:


Simplifying
15 + 3r + -4 = 1 + 7r

Reorder the terms:
15 + -4 + 3r = 1 + 7r

Combine like terms: 15 + -4 = 11
11 + 3r = 1 + 7r

Solving
11 + 3r = 1 + 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.
11 + 3r + -7r = 1 + 7r + -7r

Combine like terms: 3r + -7r = -4r
11 + -4r = 1 + 7r + -7r

Combine like terms: 7r + -7r = 0
11 + -4r = 1 + 0
11 + -4r = 1

Add '-11' to each side of the equation.
11 + -11 + -4r = 1 + -11

Combine like terms: 11 + -11 = 0
0 + -4r = 1 + -11
-4r = 1 + -11

Combine like terms: 1 + -11 = -10
-4r = -10

Divide each side by '-4'.
r = 2.5

Simplifying
r = 2.5

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