xx12=20
xx7+xx12=266
\(x\times7+x\times12=266\\ x\times\left(7+12\right)=266\\ x\times19=266\\ x=266:19\\ x=14\)
X x 7 + X x 12 = 266
X x ( 7 + 12 ) = 266
X x 19 = 266
X = 266 : 19
X = 14.
xx(7+12)=266
xx19=266
x=266:19
x=14
175 +xx12=12175
175+Xx12=12175
=>Xx12=12175-175
=>Xx12=12000
=>X=12000:12
=>X=1000
tick cho mình nha
20+20+20+20+20+20+20+20+20+20+20+20=?
20+20+20+20+20+20+20+20+20+20+20+20=
20.12=
240
20 + 20 + 20 + 20 + 20 + 20 + 20 +20 +20 + 20 + 20 + 20 = 20 x 12 = 240
20-20+20+20-20+20-20+20-20-20++20
20 + 20 - 20 + 20 - 20 + 20 - 20 + 20 - 20 + 20 - 20 + 20 - 20 + 20 = .....
Ai trả lời nhanh nhất mình tích cho!!
20 + 20 - 20 + 20 - 20 + 20 - 20 + 20 - 20 + 20 - 20 + 20 - 20 + 20 = 40
20+20-20+20-20+20-20+20-20+20-20+20-20+20=40
20+20+20+20+20+20+20+20+20+20=?
20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20
= 20 x 10
= 200
Tham khảo nha !!!
20+20+20+20+20+20+20+20+20+20=?
= 20 x 10
= 200
học tốt~~~
20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20
20+20+20+20+20+20+20+20+20+20=20*10=200
\(20+20+20+20+20+20+20+20+20+20=20.10=200\)
20+20+20+20+20+20+20+20+20+20+20+20+20+20+20=.....
tính nhanh ko được tính bằng máy tính
tick nhanh nha các bạn
20+20+20+20+20+20+20+20+20+20+20*80+20*90-50*2 = ?
(có cách giải )