2 – 3/4 – 5 – 1/2 + 3 – 1/5 = tolong dengan cara ny y

1. P = -5
Q = 4
R = -3
P + Q + R
= -5 + 4 +-3
= -1 + -3
= 4

2. X = 3/4
Y = 1/3
Z = 1/5
2X – 5Y + 3Z
= 2 3/4 – 5 1/2 + 3 1/5
= 11/4 – 11/2 + 16/5
= 55/20 – 110/20 + 64/20
= 55/20 + 64/20
= 119/20
= 5 19/20

Maaf bila salah / kurang teliti