18+x+4(x-1)=42

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


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

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

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

Combine like terms: 18 + -4 = 14
14 + x + 4x = 42

Combine like terms: x + 4x = 5x
14 + 5x = 42

Solving
14 + 5x = 42

Solving for variable 'x'.

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

Add '-14' to each side of the equation.
14 + -14 + 5x = 42 + -14

Combine like terms: 14 + -14 = 0
0 + 5x = 42 + -14
5x = 42 + -14

Combine like terms: 42 + -14 = 28
5x = 28

Divide each side by '5'.
x = 5.6

Simplifying
x = 5.6

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