Question

1) TÍNH CHẤT GIAO HOÁN

VIẾT TIẾP VÀO CHỖ CHẤM:

3/7+2/7=...                           2/7+3/7=...                                3/7+2/7...2/7+3/7

Answer 1

3 / 7 + 2 / 7 = 5 / 7

2 / 7 + 3 / 7 = 5 / 7

=> 3 / 7 + 2 / 7 = 2 / 7 + 3 / 7

Answer 2

5/7

5/7

=

Answer 3

3/7+/7=5/7

2/7+3/7=5/7

3/7+2/7=2/7+3/7

Answer 4

\(\frac{3}{7}+\frac{2}{7}=\frac{3+2}{7}=\frac{5}{7}\)

\(\frac{2}{7}+\frac{3}{7}=\frac{2+3}{7}=\frac{5}{7}\)

\(\frac{3}{7}+\frac{2}{7}=\frac{2}{7}+\frac{3}{7}\)

Answer 5

3/7+2/7=5/7

2/7+3/7=5/7

3/7+2/7=2/7+3/7.

Answer 6

3/7+2/7=0,8                            2/7+3/7=0.8                            3/7+2/7=2/7+3/7

Answer 7

3/7+2/7=5/7

2/7+3/7=5/7

3/7+2/7=2/7+3/7

K mình nhé

Answer 8

\(\frac{3}{7}+\frac{2}{7}=\frac{5}{7}\)

\(\frac{2}{7}+\frac{3}{7}=\frac{5}{7}\)

\(\frac{3}{7}+\frac{2}{7}=\frac{2}{7}+\frac{3}{7}\)

Answer 9

\(\frac{3}{7}+\frac{2}{7}=\frac{5}{7}\) ; \(\frac{2}{7}+\frac{3}{7}=\frac{5}{7}\)

Vậy : \(\frac{3}{7}+\frac{2}{7}=\frac{2}{7}+\frac{3}{7}\)

Hok tốt