What is the answer to 3x+8y+13x

Collect the like terms

3x+13x=16x

16x+8y

Simplifying

3x + 8y + 13x = 0

Reorder the terms:

3x + 13x + 8y = 0

Combine like terms: 3x + 13x = 16x

16x + 8y = 0

Solving

16x + 8y = 0

Solving for variable 'x'.

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

Add '-8y' to each side of the equation.

16x + 8y + - 8y = 0 + - 8y

Combine like terms: 8y + - 8y = 0

16x + 0 = 0 + - 8y

16x = 0 + - 8y

Remove the zero:

16x = - 8y

Divide each side by '16'.

x = - 0.5y

Simplifying

x = - 0.5y