3(6r-1)-7(1-3r)=68

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Solution for 3(6r-1)-7(1-3r)=68 equation:


Simplifying
3(6r + -1) + -7(1 + -3r) = 68

Reorder the terms:
3(-1 + 6r) + -7(1 + -3r) = 68
(-1 * 3 + 6r * 3) + -7(1 + -3r) = 68
(-3 + 18r) + -7(1 + -3r) = 68
-3 + 18r + (1 * -7 + -3r * -7) = 68
-3 + 18r + (-7 + 21r) = 68

Reorder the terms:
-3 + -7 + 18r + 21r = 68

Combine like terms: -3 + -7 = -10
-10 + 18r + 21r = 68

Combine like terms: 18r + 21r = 39r
-10 + 39r = 68

Solving
-10 + 39r = 68

Solving for variable 'r'.

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

Add '10' to each side of the equation.
-10 + 10 + 39r = 68 + 10

Combine like terms: -10 + 10 = 0
0 + 39r = 68 + 10
39r = 68 + 10

Combine like terms: 68 + 10 = 78
39r = 78

Divide each side by '39'.
r = 2

Simplifying
r = 2

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