Question

mo ngoac  7x - 15 dong : 3 = 2 

Answer 1

(7x-15):3=2

7x-15=2x3

7x-15=6

7x=6+15

7x=21

x=21/7

x=3

Answer 2

(7x-15):3=2

7x-15=2x3

7x-15=6

7x=6+15

7x=21

x=21:7

x=3

tk mk nhé!!!

Answer 3

ttiep nha

x + 32 xong roi moi - 17 nha roi nhan 2 = 42

tinh dung nha 

Answer 4

dung roi do