3x+19+x+20=90

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Solution for 3x+19+x+20=90 equation:


Simplifying
3x + 19 + x + 20 = 90

Reorder the terms:
19 + 20 + 3x + x = 90

Combine like terms: 19 + 20 = 39
39 + 3x + x = 90

Combine like terms: 3x + x = 4x
39 + 4x = 90

Solving
39 + 4x = 90

Solving for variable 'x'.

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

Add '-39' to each side of the equation.
39 + -39 + 4x = 90 + -39

Combine like terms: 39 + -39 = 0
0 + 4x = 90 + -39
4x = 90 + -39

Combine like terms: 90 + -39 = 51
4x = 51

Divide each side by '4'.
x = 12.75

Simplifying
x = 12.75

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