Question

Mă ajută și pe mine cineva ? , vă roooog !!!!! dau 40 de puncte.​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

-2,5

b)

-2.7

c)

-3,7

d)

-1,9

e)

¹⁰⁾2/15-¹⁵⁾3/10=

20/150-45/150=

-20⁽¹⁰/150⁽¹⁰=

- 2/15

f)

-⁵⁾1/4+⁴⁾2/5

= - 5/20+8/20

= 3/20

g)

-³⁾3/7-20/21

= -9/21-20/21

=- 29/21

h)

⁴⁾5/6-³⁾3/8=

20/24-9/24

= 11/24

i)

= - 37/12+ ²⁾1/6

=-37/12+2/12

=  - 35/12

j)

= - ¹⁰⁾19/8 -⁸⁾17/10

= - 190/80 -136/80

= -326⁽² /80 ⁽²

= - 163/40

-

k)

= -²⁾ 21/4+9/8

= - 42 /8+9/8

= - 33/8

l)

= ²⁾31/7- 121/14

= 62/14-121/14

= - 59/14

m)

= -⁵⁾ 11 /4 + ⁴⁾17/5

= - 55/20+68/20

=15⁵⁾/20⁽⁵

=3/4

-

n)

= ⁴⁾34/9 - ³⁾13/12

=136/36-39/36

=97/36

-

o)

= ³⁾15/8 - ⁴⁾23/6

=45/24- 92/24

= - 68⁽²/24⁽²

= - 34⁽²/12⁽²

= - 17 /6

p)

= - ⁷⁾7/4 +⁴⁾15/7

= - 49/ 28 + 60 /28

= 11/28