x+3x+5=45

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Solution for x+3x+5=45 equation: 


Simplifying
x + 3x + 5 = 45

Reorder the terms:
5 + x + 3x = 45

Combine like terms: x + 3x = 4x
5 + 4x = 45

Solving
5 + 4x = 45

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 + 4x = 45 + -5

Combine like terms: 5 + -5 = 0
0 + 4x = 45 + -5
4x = 45 + -5

Combine like terms: 45 + -5 = 40
4x = 40

Divide each side by '4'.
x = 10

Simplifying
x = 10

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