\(\frac{9}{3}.\frac{6}{7}+\frac{9}{3}.\frac{3}{3}\)
= \(\frac{9}{3}.\left(\frac{6}{7}+\frac{3}{3}\right)\)
= \(\frac{9}{3}.\frac{13}{7}\)
= \(\frac{39}{7}\)
9/3 x 6/7 + 9/3 x 3/3
= 54/21 + 27/9
= 39/7
\(\frac{9}{3}.\frac{6}{7}+\frac{9}{3}.\frac{3}{3}\)
= \(\frac{9}{3}.\left(\frac{6}{7}+\frac{3}{3}\right)\)
= \(\frac{9}{3}.\frac{13}{7}\)
= \(\frac{39}{7}\)
9/3 x 6/7 + 9/3 x 3/3
= 54/21 + 27/9
= 39/7
8/9÷3/7=
8/9+2/5=
7/8-1/3=
3/10×1/6=
b.hỗn số
1 2/7+6 5/6=
5 3/4-1/5 =
6 2/9÷4 7/10=
5/3+3/2-7/6=
1+1+1+1+2+2+2+3+3+3+3+4+4+4+4+5+5+5+5+6+6+6+6+7+7+7+7+8+8+8+8+9+9+9+9+10=
1+2+3+4+5+6++7+8+9+9+8+7+6+5+4+3+2+1+1+2+3+4+5++6+7+8+9=?
1+2+3+4+5+6+7+8+9+9+9+9+9+8+7+6+5+4+1+23+3=?
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 +1028 giúp mk nha
1 tính
a,( 5/6 + 3/8 ) x 2/7
b,6/7x2/3:5/7
c,8/9+3/4x4/9
Rút gọn các phân số sau
a) 1×3+3×5+5×7+7×9
3×6+9×10+15×14+21×18
b) 1×2+2×3+3×4+4×5
3×6+6×9+9×12+12×15
c) 0,3+3/7+3/11
0,4+4/7+4/11
Các bạn ghi rõ bước giải giùm mk nha
bài 1.tính bằng cách hợp lí nhất :
a) 1/7 + 2/7 + 3/7 + ..... 3 5/7 + 3 6/7
b) 3/5x 3 5/9 + 6/5 x 11/9