Question

Simplify each of the following ex
(a) 15x + (-7y) + (-18x) + 4y
(b) –3x + (-5y) - (-10y) - 7x
(c) 9x - (-2y) - 8x - (-12y)
(d) -7x - (-15y) - (-2x) + (-6y)​

Answer 1

Step-by-step explanation:

(a)

15x - 7y - 18x + 4y

15x - 18x - 7y + 4y

-3x - 3y

(b)

-3x - 5y + 10y - 7x

-3x - 7x - 5y + 10y

-10x + 5y

(c)

9x + 2y - 8x + 12y

9x - 8x + 2y + 12y

x + 14y

(d)

-7x + 15y + 2x - 6y

-7x + 2x + 15y - 6y

-5x + 9y