3(4+7r)+3x=

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Solution for 3(4+7r)+3x= equation:


Simplifying
3(4 + 7r) + 3x = 0
(4 * 3 + 7r * 3) + 3x = 0
(12 + 21r) + 3x = 0

Solving
12 + 21r + 3x = 0

Solving for variable 'r'.

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

Add '-12' to each side of the equation.
12 + 21r + -12 + 3x = 0 + -12

Reorder the terms:
12 + -12 + 21r + 3x = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 21r + 3x = 0 + -12
21r + 3x = 0 + -12

Combine like terms: 0 + -12 = -12
21r + 3x = -12

Add '-3x' to each side of the equation.
21r + 3x + -3x = -12 + -3x

Combine like terms: 3x + -3x = 0
21r + 0 = -12 + -3x
21r = -12 + -3x

Divide each side by '21'.
r = -0.5714285714 + -0.1428571429x

Simplifying
r = -0.5714285714 + -0.1428571429x

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