7x+9+5x=45+3x

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Solution for 7x+9+5x=45+3x equation:


Simplifying
7x + 9 + 5x = 45 + 3x

Reorder the terms:
9 + 7x + 5x = 45 + 3x

Combine like terms: 7x + 5x = 12x
9 + 12x = 45 + 3x

Solving
9 + 12x = 45 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
9 + 12x + -3x = 45 + 3x + -3x

Combine like terms: 12x + -3x = 9x
9 + 9x = 45 + 3x + -3x

Combine like terms: 3x + -3x = 0
9 + 9x = 45 + 0
9 + 9x = 45

Add '-9' to each side of the equation.
9 + -9 + 9x = 45 + -9

Combine like terms: 9 + -9 = 0
0 + 9x = 45 + -9
9x = 45 + -9

Combine like terms: 45 + -9 = 36
9x = 36

Divide each side by '9'.
x = 4

Simplifying
x = 4

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