11+12-24=?
12+11=23
13+11=24 the
23+24=?
9/11 + 1/12 : 11/24
`9/11 + 1/12 : 11/24 = 9/11 + 1/12 xx 24/11 = 9/11 + 2/11 = 11/11= 1`
9/11 1/12:11/24
9/11 + 1/12 : 11/24
`9/11+1/12:11/24=9/11+1/12xx24/11=9/11+[2xx12]/[12xx11]=9/11+2/11=11/11=1`
\(-\dfrac{\text{11}}{\text{24}}:\dfrac{\text{17}}{\text{23}}-\dfrac{\text{11}}{\text{24}}:\dfrac{\text{17}}{\text{11}}-\dfrac{1}{\text{12}}\)
Tính : 11 + 67 × 24 + 12 + 55 - 24 = ?
11 + 67 x 24 + 12 + 55 - 24
= 11 + 55 + 67 x 24 - 24 + 12
= 66 + 24 x (67 - 1) + 12
= 66 + 24 x 66 + 12
= 66 x (24 + 1) + 12
= 66 x 25 + 12
= 1650 + 12
= 1662
11 + 67 x 24 + 12 + 55 - 24
= 11 + 55 + 24 x ( 67 - 1) + 12
= 66 + 24 x 66 + 12
= 66 x ( 1 + 24 ) + 12
= 66 x 25 + 12
= 1650 + 12
= 1662
bài 2:
\(\dfrac{11}{12}\)-\(\dfrac{5}{12}\)=...... \(\dfrac{25}{24}\)-\(\dfrac{16}{24}\)=...... \(\dfrac{27}{36}\)-\(\dfrac{15}{36}\)=.......
11/12-5/12=6/12=1/2
25/24-16/24=9/24=3/8
27/36-15/36=12/36=2/3
k cho mik nhé
a) 25. (-4) =?
(-12).12 =?
b) (-10) .11=?
137.(-15)=?
c) 24.(-25)=?
(-15).12=?
a)=-100
=-144
b)=-110
=-2055
c)=-600
=-180
\(B=\dfrac{3^{12}.13+3^{12}.3}{3^{11}.2^{24}}\)
\(B=\dfrac{3^{12}\cdot13+3^{12}\cdot3}{3^{11}\cdot2^{24}}=\dfrac{3^{12}\cdot2^4}{3^{11}\cdot2^{24}}=\dfrac{3}{2^{20}}\)