42-3X=-9X

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


Simplifying
42 + -3X = -9X

Solving
42 + -3X = -9X

Solving for variable 'X'.

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

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

Combine like terms: -3X + 9X = 6X
42 + 6X = -9X + 9X

Combine like terms: -9X + 9X = 0
42 + 6X = 0

Add '-42' to each side of the equation.
42 + -42 + 6X = 0 + -42

Combine like terms: 42 + -42 = 0
0 + 6X = 0 + -42
6X = 0 + -42

Combine like terms: 0 + -42 = -42
6X = -42

Divide each side by '6'.
X = -7

Simplifying
X = -7

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