3x+4x=12+3

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Solution for 3x+4x=12+3 equation: 


Simplifying
3x + 4x = 12 + 3

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

Combine like terms: 12 + 3 = 15
7x = 15

Solving
7x = 15

Solving for variable 'x'.

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

Divide each side by '7'.
x = 2.142857143

Simplifying
x = 2.142857143

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