diketahui a=3 3/4,b=2 1/2,c=2 1.a+b-c=.......... 2.a-b+c=......... 3.a+c-b=......... tolong bantuin jawab tiga tiganya ya....plis..... makasih..

a = 3 3/4 = 15/4
b = 2 1/2 = 5/2
c = 2

1 ) 15/4 + 5/2 - 2
= 15/4 + 10/4 - 8/4
= 17/4
= 4 1/4

2 ) 15/4 - 5/2 + 2
= 15/4 - 10/4 + 8/4
= 13/4
= 3 1/4

3 ) 15/4 + 2 - 5/2
= 15/4 + 8/4 - 10/4
= 13/4
= 3 1/4

Maaf bila ada kesalahan