Question

[Trần Đỗ Nhân]

Các bạn giúp mình nha !!! Thanks các bạn !!!

a) 6xz-7x²/4y²+9xz+7x²/4y²

b) 5x+10/4x-8:2x+4/4-2x

c) (2/2x-1 - 2/1-2x):4x²/4x²-1

d) 5b/b²-9.b-3/10b

e) (5/3(x+2)² - 2x/3x+6 + 1/3).x+2/x-3

f) (x/x-y - y/x+y + 2xy/x²-y²):x+y/2x-2y.

Answer 1

[Trần Đỗ Nhân]

https://i.imgur.com/MXpQeVj.jpg