tolong jawab ya.sama caranya maksihhh

A. 8x
B. 2x
Intinya suku yg sama tinggal dijumlah

a. 2x + 7x
= 9x

b. -5x + 13x - 6x
= 8x - 6x
= 2x

c. 4x - 5y + 3x + 2y - 5x
= 4x + 3x - 5x - 5y + 2y
= 7x - 5x - 5y + 2y
= 2x - 3y

d. 3(x - 2y) - 2(x + 4y) - 6x
= 3x - 6y - 2x - 8y - 6x
= 3x - 2x - 6x - 6y - 8y
= x - 6x - 14y
= -5x - 14y