Răspuns :
Răspuns:
Explicație pas cu pas:
x+1 /4=5/6
x = 5/6 - 1/4 = 10/12 - 3/12 = 7/12
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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
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