(1 7/25+12 3/5-8, 9)*0,5= ------------------------------ 0, 2388:796

1)12,6+1,28=13,88 2)13,88-8,90=4,98 3)4,98*0,5=2,49 4)0,2388:796=0,0003 5)2,49:0,0003=8300