3x+4(x-3)=72

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Solution for 3x+4(x-3)=72 equation:


Simplifying
3x + 4(x + -3) = 72

Reorder the terms:
3x + 4(-3 + x) = 72
3x + (-3 * 4 + x * 4) = 72
3x + (-12 + 4x) = 72

Reorder the terms:
-12 + 3x + 4x = 72

Combine like terms: 3x + 4x = 7x
-12 + 7x = 72

Solving
-12 + 7x = 72

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 7x = 72 + 12

Combine like terms: -12 + 12 = 0
0 + 7x = 72 + 12
7x = 72 + 12

Combine like terms: 72 + 12 = 84
7x = 84

Divide each side by '7'.
x = 12

Simplifying
x = 12

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