Question

Afla termenul necunoscut exercitiul 20 va rog dau 55 puncte

Answer 1

Răspuns:

Explicație pas cu pas:....................................

Answer 2

Răspuns:

Explicație pas cu pas:

7/10 - a = 5/10

a = 7/10 - 5/10

a = 2/10 :2 = 1/5

b + 3/9 = 7/9

b = 7/9 - 3/9

b = 4/9

2/4 + c = 4/4

c = 4/4 - 2/4

c = 2/4 :2 = 1/2

d - 1/3 = 4/3

d = 4/3 + 1/3

d = 5/3

3/10 + 6/10 - e = 2/10

9/10 - e = 2/10

e = 9/10 - 2/10

e = 7/10

f - ( 56 /100 + 31/100 ) = 61/100

f -87/100 = 61/100

f = 61/100 + 87/100

f = 148/100 :4 = 37 /25

9/10 - g = 7/10 - 3/10

9/10 - g = 4/10

g = 9/10 - 4/10

g = 5/10 :5 = 1/5

h + 3/4 + 2/4 = 10/4 - 1/4

h + 5/4 = 9/4

h = 9/4 - 5/4

h = 4/4 : 4 = 1