x + 67 = 44

      x=44+ 67

      x=111

360 + 440 + 220

= 800 + 200

= 1000

theo bài ra ta có hình vẽ :

Vì OA < OB ( 2cm < 5cm ) nên A nằm giữa O và B

=> OA + AB = OB

hay 2cm + AB = 5cm

=> AB = 5cm - 2cm = 3cm

Vì OB < OC nên B nằm giữa O và C

=> OB + BC = OC

hay 5cm + BC = 8cm

=> BC = 8cm - 5cm = 3cm

vậy BC = BA = 3cm

đáp án đúng là D : thương 

nha

đáp án là

1 + 1 = 2 nha bạn

tk mk nha, xin đó

mk hết lượt kb rùi

200 chuan 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%

80 + 90 = 170 

Kết bạn với mình nhé

Mình cảm ơn bạn nhiều

Sorry mình nhầm bằng 177 mới đúng!

Vì mình vừa thi xong đúng mà