4x+21x+42=4x-9

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Solution for 4x+21x+42=4x-9 equation:


Simplifying
4x + 21x + 42 = 4x + -9

Reorder the terms:
42 + 4x + 21x = 4x + -9

Combine like terms: 4x + 21x = 25x
42 + 25x = 4x + -9

Reorder the terms:
42 + 25x = -9 + 4x

Solving
42 + 25x = -9 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
42 + 25x + -4x = -9 + 4x + -4x

Combine like terms: 25x + -4x = 21x
42 + 21x = -9 + 4x + -4x

Combine like terms: 4x + -4x = 0
42 + 21x = -9 + 0
42 + 21x = -9

Add '-42' to each side of the equation.
42 + -42 + 21x = -9 + -42

Combine like terms: 42 + -42 = 0
0 + 21x = -9 + -42
21x = -9 + -42

Combine like terms: -9 + -42 = -51
21x = -51

Divide each side by '21'.
x = -2.428571429

Simplifying
x = -2.428571429

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