9X+3=-12X-42

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Solution for 9X+3=-12X-42 equation:


Simplifying
9X + 3 = -12X + -42

Reorder the terms:
3 + 9X = -12X + -42

Reorder the terms:
3 + 9X = -42 + -12X

Solving
3 + 9X = -42 + -12X

Solving for variable 'X'.

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

Add '12X' to each side of the equation.
3 + 9X + 12X = -42 + -12X + 12X

Combine like terms: 9X + 12X = 21X
3 + 21X = -42 + -12X + 12X

Combine like terms: -12X + 12X = 0
3 + 21X = -42 + 0
3 + 21X = -42

Add '-3' to each side of the equation.
3 + -3 + 21X = -42 + -3

Combine like terms: 3 + -3 = 0
0 + 21X = -42 + -3
21X = -42 + -3

Combine like terms: -42 + -3 = -45
21X = -45

Divide each side by '21'.
X = -2.142857143

Simplifying
X = -2.142857143

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