x+3+3x=45

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


Simplifying
x + 3 + 3x = 45

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

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

Solving
3 + 4x = 45

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 + 4x = 45 + -3

Combine like terms: 3 + -3 = 0
0 + 4x = 45 + -3
4x = 45 + -3

Combine like terms: 45 + -3 = 42
4x = 42

Divide each side by '4'.
x = 10.5

Simplifying
x = 10.5

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