Simplify the expression by combining like terms

15+12x-5x+44-7

Simplifying

15 + 12x + - 5x + 4y + - 7 = 0

Reorder the terms:

15 + - 7 + 12x + - 5x + 4y = 0

Combine like terms: 15 + - 7 = 8

8 + 12x + - 5x + 4y = 0

Combine like terms: 12x + - 5x = 7x

8 + 7x + 4y = 0

Solving

8 + 7x + 4y = 0

Solving for variable 'x'.

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

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

8 + 7x + - 8 + 4y = 0 + - 8

Reorder the terms:

8 + - 8 + 7x + 4y = 0 + - 8

Combine like terms: 8 + - 8 = 0

0 + 7x + 4y = 0 + - 8

7x + 4y = 0 + - 8

Combine like terms: 0 + - 8 = - 8

7x + 4y = - 8

Add '-4y' to each side of the equation.

7x + 4y + - 4y = - 8 + - 4y

Combine like terms: 4y + - 4y = 0

7x + 0 = - 8 + - 4y

7x = - 8 + - 4y

Divide each side by '7'.

x = - 1.142857143 + - 0.5714285714y

Simplifying

x = - 1.142857143 + - 0.5714285714y