Răspuns :
b = a + 10
c = a + b
d = a + 6
e = 2
a + a + 10 + a + a + 10 + a + 6 + 2a + 12 = 80
7a + 38 = 80
a = 42 : 7
a = 6
b = a + 10 = 6 + 10 = 16
c = a + b = 6 + 16 = 22
d = a + 6 = 6 + 6 = 12
e = 2d = 2 × 12 = 24
c = a + b
d = a + 6
e = 2
a + a + 10 + a + a + 10 + a + 6 + 2a + 12 = 80
7a + 38 = 80
a = 42 : 7
a = 6
b = a + 10 = 6 + 10 = 16
c = a + b = 6 + 16 = 22
d = a + 6 = 6 + 6 = 12
e = 2d = 2 × 12 = 24