Question

20. Rezolvaţi în Q ecuaţiile:
x+1 /4=5/6

;
b)
X-2/3-1/2=5:6

Answer 1

Răspuns:

Explicație pas cu pas:

x+1 /4=5/6

x = 5/6 - 1/4 = 10/12 - 3/12 = 7/12

____________

X-2/3-1/2=5/6

x - 4/6 - 3/6 = 5/6

x - 7/6 = 5/6

x = 7/6 + 5/6 = 12/6 = 2

Answer 2

a) x+1/4=5/6

24x/24+6/24=20/24

24x+6=20

24x=20-6

24x=14

x=14/24

x=7/12

b) x-2/3-1/2=5:6

x-2/3-1/2=5/6

6x/6-4/6-3/6=5/6

6x-4-3=5

6x-7=5

6x=5+7

6x=12

x=12:6

x=2