x+4(3-x)=9

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


Simplifying
x + 4(3 + -1x) = 9
x + (3 * 4 + -1x * 4) = 9
x + (12 + -4x) = 9

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

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

Solving
12 + -3x = 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 + -3x = 9 + -12

Combine like terms: 12 + -12 = 0
0 + -3x = 9 + -12
-3x = 9 + -12

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

Divide each side by '-3'.
x = 1

Simplifying
x = 1

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