3x+6+9x+12=300

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Solution for 3x+6+9x+12=300 equation:


Simplifying
3x + 6 + 9x + 12 = 300

Reorder the terms:
6 + 12 + 3x + 9x = 300

Combine like terms: 6 + 12 = 18
18 + 3x + 9x = 300

Combine like terms: 3x + 9x = 12x
18 + 12x = 300

Solving
18 + 12x = 300

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 12x = 300 + -18

Combine like terms: 18 + -18 = 0
0 + 12x = 300 + -18
12x = 300 + -18

Combine like terms: 300 + -18 = 282
12x = 282

Divide each side by '12'.
x = 23.5

Simplifying
x = 23.5

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