3x-5+4x=79

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Solution for 3x-5+4x=79 equation: 


Simplifying
3x + -5 + 4x = 79

Reorder the terms:
-5 + 3x + 4x = 79

Combine like terms: 3x + 4x = 7x
-5 + 7x = 79

Solving
-5 + 7x = 79

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + 7x = 79 + 5

Combine like terms: -5 + 5 = 0
0 + 7x = 79 + 5
7x = 79 + 5

Combine like terms: 79 + 5 = 84
7x = 84

Divide each side by '7'.
x = 12

Simplifying
x = 12

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