\(\left(\dfrac{7}{9}+\dfrac{2}{3}\right):\dfrac{5}{6}\)=\(\dfrac{13}{9}:\dfrac{5}{6}\)=\(\dfrac{13}{9}\\\)x\(\dfrac{6}{5}\)=\(\dfrac{26}{15}\)
\(\left(\dfrac{7}{9}+\dfrac{2}{3}\right):\dfrac{5}{6}\)=\(\dfrac{13}{9}:\dfrac{5}{6}\)=\(\dfrac{13}{9}\\\)x\(\dfrac{6}{5}\)=\(\dfrac{26}{15}\)
1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9=?
Tính 9/5 + 3/4 4/7 x 3/8 6/7 x 2/3 - 2/7 3/5 - 2/9 5/9 ÷ 5/6 4/5 ÷2/5 x 1/4
Nhanh giúp mik nhá
1+1+1+2+2+2+3+3+3+4+4+4+5+5+5+6+6+6+7+7+7+8+8+8+9+9+9+.......+n
Tìm n
1.Tính nhanh:
a,7/9*2/5+7/5*1/5+3/5*2/9
b,(2/5+6/7+8/9):(3/5+9/7+4/5)
d.(1/2+2/6+1/12+.....+1/9900)*(1/3+1/2+5/6)
bn nào làm xong và nhanh mk tick cho ha!!!!!!!
1+1+2+3+4+5+5+6+7+8+9+9+9+7+5+5+6+9+9+9+9
1+1+1+1+1+2+3+4+5+6+7+8+9+10 x 1+1+1+1+1+2+3+4+5+6+7+8+9+10 +1+1+1+1+1+2+3+4+5+6+7+8+9+10 - 10 x 9 - 9 + 45 +46 +47 =
Tính quy đồng các phân số sau :
2/6 và 4/7
5/9 và 6/5
7/2 và 5/8
4/9 và 8/7
9/4 và 2/6
4/3 và 9/4
tinh bang hai cach
(6/11+5/11) * 3/7
(6/7-4/7) : 2/5
3/5 * 7/9 - 3/5 *2/9
8/15 : 2/11 + 7/15 :2/11
\(\dfrac{3}{7}\) + 4 = ?
\(\dfrac{5}{9}\) x 3 = ?
\(\dfrac{7}{8}\) - \(\dfrac{2}{9}\)= ?
5 - \(\dfrac{3}{4}\)= ?
\(\dfrac{5}{7}\) : 6 = ?
\(\dfrac{5}{6}\) x \(\dfrac{2}{7}\)= ?
3 + \(\dfrac{3}{4}\)= ?
\(\dfrac{3}{5}x\dfrac{4}{8}\) = ?
5 : \(\dfrac{3}{8}\)= ?
Mong mn trả lời
1+9+3+7+5+8+4+6+2+1+2+3+4+5+7+8+6+9=maays