4x+3(x-18)=30

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Solution for 4x+3(x-18)=30 equation:


Simplifying
4x + 3(x + -18) = 30

Reorder the terms:
4x + 3(-18 + x) = 30
4x + (-18 * 3 + x * 3) = 30
4x + (-54 + 3x) = 30

Reorder the terms:
-54 + 4x + 3x = 30

Combine like terms: 4x + 3x = 7x
-54 + 7x = 30

Solving
-54 + 7x = 30

Solving for variable 'x'.

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

Add '54' to each side of the equation.
-54 + 54 + 7x = 30 + 54

Combine like terms: -54 + 54 = 0
0 + 7x = 30 + 54
7x = 30 + 54

Combine like terms: 30 + 54 = 84
7x = 84

Divide each side by '7'.
x = 12

Simplifying
x = 12

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