А) = 3 5/16 + 4/16 - 2 1/16 = 3 9/16 - 2 1/16 = 1 8/16 = 1 1/2
б) = 1/8 + 2 7/8 + 2 3/5 = 5/40+2 35/40+ 2 24/40= 4 64/40=5 24/40=5 3/5
в) = 6 11/12 - 3 2/12 - 1 3/12= 2 6/12 = 2 1/2
г) = 3 14/18 - 1 5/18 + 3 9/18 = 5 18/18 = 6
<span>654*15=9810
</span><span>345-174=171
</span>9810+171=9981