Răspuns:
Explicație pas cu pas:
1.a)
x + 1/3 = 4/3
x = 4/3 - 1/3 = 3/3 = 1
b)
3/5 - 2/35 = 2x
21/35 - 2/35 = 2x
19/35 = 2x
x = 19/35 : 2 = 19/70
c)
22/3 - x = 22/7
x = 22/3 - 22/7 = 22(1/3 - 1/7) = 22(7/21 - 3/21) = 22*4/21 = 88/21
d)
x - 3/8 = 1/24
x = 3/8 + 1/24 = 9/24 + 1/24 = 10/24 = 5/12
e)
7/2 + x = 5
x = 5 - 7/2 = 10/2 - 7/2 = 3/2
f)
2x/3 - 4/3 = 4/3
2x/3 = 4/3 + 4/3 = 8/3
x = 8/3 : 2/3 = 8/3*3/2 = 4