3x+4x-3=25

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Solution for 3x+4x-3=25 equation: 


Simplifying
3x + 4x + -3 = 25

Reorder the terms:
-3 + 3x + 4x = 25

Combine like terms: 3x + 4x = 7x
-3 + 7x = 25

Solving
-3 + 7x = 25

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 7x = 25 + 3

Combine like terms: -3 + 3 = 0
0 + 7x = 25 + 3
7x = 25 + 3

Combine like terms: 25 + 3 = 28
7x = 28

Divide each side by '7'.
x = 4

Simplifying
x = 4

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