jika a+b=50 b+c=59 c+a=53 nilai dari b-a+c=…

a+b+b+c+c+a=162
2a+2b+2c=162
2a+2b= 100    -
2c = 62
c=31

c+a = 53
31+a=53
a=22

a+b=50
22+b=50
b=28

b-a+c=28-22+31=37

22 (a) + 28 (b) = 50
28 (b) + 31 (c) = 59
31 (c) + 22 (a) = 53
28 (b) - 22 (a) + 31 (c) = 37

Done