3(7r-7)=-6+6t

Solution for 3(7r-7)=-6+6t equation:

Simplifying
3(7r + -7) = -6 + 6t

Reorder the terms:
3(-7 + 7r) = -6 + 6t
(-7 * 3 + 7r * 3) = -6 + 6t
(-21 + 21r) = -6 + 6t

Solving
-21 + 21r = -6 + 6t

Solving for variable 'r'.

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

Add '21' to each side of the equation.
-21 + 21 + 21r = -6 + 21 + 6t

Combine like terms: -21 + 21 = 0
0 + 21r = -6 + 21 + 6t
21r = -6 + 21 + 6t

Combine like terms: -6 + 21 = 15
21r = 15 + 6t

Divide each side by '21'.
r = 0.7142857143 + 0.2857142857t

Simplifying
r = 0.7142857143 + 0.2857142857t