Question

se alguém acerta vou fazer outra pergunta valendo 50 pontos ok
x + x = 20
y + y = 5
z + z = 3
zy + xy + zx + zz + z % y = ?

Answer 1

x + x = 20                  

2x=20

x=10

y + y = 5

2y=5

y=5/2

z + z = 3

2z=3

z=3/2

zy + xy + zx + zz + z % y = ?

3/2*5/2 + 10*5/2 + 3/2*10 + 3/2*3/2 + 3/2%5/2 =

15/4 + 50/2 +30/2 + 9/4 + (0,015*5/2)

15/4+50/2+30/2+9/4+ 0,075/2=

15+100+60+9+0,15/4=184,15/4= 46,03