Question

Answer 1

Bài 2

1) -11/8 - 1 4/11 + 1 3/8 + 0,5 - 5/41

= -11/8 - 15/11 + 11/8 + 1/2 - 5/41

= -15/11 + 1/2 - 5/41

= -19/22 - 5/41

= -889/902

2) -(3/7 + 3/8) - (-3/8 + 4/7)

= -3/7 - 3/8 + 3/8 -4/7

= (-3/7 - 4/7) + (-3/8 + 3/8)

= -1

3) -5/17 . 31/33 + (-5/17).2/33 + 2 5/17

= -5/17.(31/33 + 2/33) + 39/17

= -5/17 + 39/17

= 2

4) 12/17 . 5/7 + (-12/17).2/17 - 4/17

= 12/17.(5/17 - 2/17) - 4/17

= 12/17 . 3/17 - 4/17

= 36/17 - 4/17

= 32/17

Answer 2

5) 3/8 . 23/14 - 3/8 . 9/14 + (3/8)⁰

= 3/8 . (23/14 - 9/14) + 1

= 3/8 + 1

= 11/8

6) -3/11 . 5/7 + 5/7 . (-8/11) + 2 5/7

= 5/7 . (-3/11 - 8/11) + 19/7

= 5/7 . (-1) + 19/7

= -5/7 + 19/7

= 1

7) 35 1/6 : (-4/5) - 45 1/6 : (-4/5)

= 211/6 . (-5/4) - 271/6 . (-5/4)

= -5/4 . (211/6 - 271/6)

= -5/4 . 10

= -25/2

8) (-6/7 + 6/19 - 6/31)/(9/7 - 9/19 + 9/31)

= (-3030/4123)/(5196/4123)

= -505/866

9) (0,125)¹⁰⁰ . 8¹⁰¹

= 1/8¹⁰⁰ . 8¹⁰¹

= 8

10) -3,75 . (-7,2) + 2,8 . 3,75

= 3,75.(7,2 + 2,8)

= 3,75 . 10

= 37,5