42=18+x+4x-1

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Solution for 42=18+x+4x-1 equation:


Simplifying
42 = 18 + x + 4x + -1

Reorder the terms:
42 = 18 + -1 + x + 4x

Combine like terms: 18 + -1 = 17
42 = 17 + x + 4x

Combine like terms: x + 4x = 5x
42 = 17 + 5x

Solving
42 = 17 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
42 + -5x = 17 + 5x + -5x

Combine like terms: 5x + -5x = 0
42 + -5x = 17 + 0
42 + -5x = 17

Add '-42' to each side of the equation.
42 + -42 + -5x = 17 + -42

Combine like terms: 42 + -42 = 0
0 + -5x = 17 + -42
-5x = 17 + -42

Combine like terms: 17 + -42 = -25
-5x = -25

Divide each side by '-5'.
x = 5

Simplifying
x = 5

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