30-18=4(x-5)

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Solution for 30-18=4(x-5) equation:


Simplifying
30 + -18 = 4(x + -5)

Combine like terms: 30 + -18 = 12
12 = 4(x + -5)

Reorder the terms:
12 = 4(-5 + x)
12 = (-5 * 4 + x * 4)
12 = (-20 + 4x)

Solving
12 = -20 + 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.
12 + -4x = -20 + 4x + -4x

Combine like terms: 4x + -4x = 0
12 + -4x = -20 + 0
12 + -4x = -20

Add '-12' to each side of the equation.
12 + -12 + -4x = -20 + -12

Combine like terms: 12 + -12 = 0
0 + -4x = -20 + -12
-4x = -20 + -12

Combine like terms: -20 + -12 = -32
-4x = -32

Divide each side by '-4'.
x = 8

Simplifying
x = 8

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