Question

2 2/5 а +b если а = 2 1/12 b=3 27/40

Answer 1

2 2/5 а +b если а = 2 1/12 b=3 27/40

2 2/5 а +b= 2 2/5 ·2 1/12 + 3 27/40=12/5 ·25/12 +3 27/40=5+3 27/40=8 27/40