12x-7x=4+5

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Solution for 12x-7x=4+5 equation: 


Simplifying
12x + -7x = 4 + 5

Combine like terms: 12x + -7x = 5x
5x = 4 + 5

Combine like terms: 4 + 5 = 9
5x = 9

Solving
5x = 9

Solving for variable 'x'.

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

Divide each side by '5'.
x = 1.8

Simplifying
x = 1.8

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