3x+4(x-3)=9

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Solution for 3x+4(x-3)=9 equation: 


Simplifying
3x + 4(x + -3) = 9

Reorder the terms:
3x + 4(-3 + x) = 9
3x + (-3 * 4 + x * 4) = 9
3x + (-12 + 4x) = 9

Reorder the terms:
-12 + 3x + 4x = 9

Combine like terms: 3x + 4x = 7x
-12 + 7x = 9

Solving
-12 + 7x = 9

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 = 9 + 12

Combine like terms: -12 + 12 = 0
0 + 7x = 9 + 12
7x = 9 + 12

Combine like terms: 9 + 12 = 21
7x = 21

Divide each side by '7'.
x = 3

Simplifying
x = 3

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