1r-4=7r+12

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Solution for 1r-4=7r+12 equation:


Simplifying
1r + -4 = 7r + 12

Reorder the terms:
-4 + 1r = 7r + 12

Reorder the terms:
-4 + 1r = 12 + 7r

Solving
-4 + 1r = 12 + 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 + 1r + -7r = 12 + 7r + -7r

Combine like terms: 1r + -7r = -6r
-4 + -6r = 12 + 7r + -7r

Combine like terms: 7r + -7r = 0
-4 + -6r = 12 + 0
-4 + -6r = 12

Add '4' to each side of the equation.
-4 + 4 + -6r = 12 + 4

Combine like terms: -4 + 4 = 0
0 + -6r = 12 + 4
-6r = 12 + 4

Combine like terms: 12 + 4 = 16
-6r = 16

Divide each side by '-6'.
r = -2.666666667

Simplifying
r = -2.666666667

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