x+3(4)+y=9

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


Simplifying
x + 3(4) + y = 9

Multiply 3 * 4
x + 12 + y = 9

Reorder the terms:
12 + x + y = 9

Solving
12 + x + y = 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 + x + -12 + y = 9 + -12

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

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

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

Add '-1y' to each side of the equation.
x + y + -1y = -3 + -1y

Combine like terms: y + -1y = 0
x + 0 = -3 + -1y
x = -3 + -1y

Simplifying
x = -3 + -1y

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