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

Step-by-step explanation:

-14

step-by-step explanation:

2x2 – 2(x+4)

=2x2-2（5+4）

=4-2×9

=4-18

=-14

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400