Răspuns:
a) x = 14,8 cm - 8,9 cm = 5,9 cm
x = 5,9 cm
b) x = 14,8 cm + 6,7 cm = 21,5 cm
c) 2/3x -> 2/3+3/3 = 5/3x
x = 12,5:5/3
x = 7,5 cm → x
2/3x = 5 cm => 12,5-7,5
d) 1/3x +11,2 = x
x-1/3 = 11,2
11,2:2/3 =
28/5•3 =
x = 84/5
x = 16,8 cm. → x
1/3x = 16,8 cm-11,2cm = 5,6 cm
EVERGREEN