3x+x-9=10

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Solution for 3x+x-9=10 equation: 


Simplifying
3x + x + -9 = 10

Reorder the terms:
-9 + 3x + x = 10

Combine like terms: 3x + x = 4x
-9 + 4x = 10

Solving
-9 + 4x = 10

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 4x = 10 + 9

Combine like terms: -9 + 9 = 0
0 + 4x = 10 + 9
4x = 10 + 9

Combine like terms: 10 + 9 = 19
4x = 19

Divide each side by '4'.
x = 4.75

Simplifying
x = 4.75

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