6+12r-5=9+71-7r

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Solution for 6+12r-5=9+71-7r equation:


Simplifying
6 + 12r + -5 = 9 + 71 + -7r

Reorder the terms:
6 + -5 + 12r = 9 + 71 + -7r

Combine like terms: 6 + -5 = 1
1 + 12r = 9 + 71 + -7r

Combine like terms: 9 + 71 = 80
1 + 12r = 80 + -7r

Solving
1 + 12r = 80 + -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.
1 + 12r + 7r = 80 + -7r + 7r

Combine like terms: 12r + 7r = 19r
1 + 19r = 80 + -7r + 7r

Combine like terms: -7r + 7r = 0
1 + 19r = 80 + 0
1 + 19r = 80

Add '-1' to each side of the equation.
1 + -1 + 19r = 80 + -1

Combine like terms: 1 + -1 = 0
0 + 19r = 80 + -1
19r = 80 + -1

Combine like terms: 80 + -1 = 79
19r = 79

Divide each side by '19'.
r = 4.157894737

Simplifying
r = 4.157894737

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