1)36,63+9ц.3/4-6ц.9/10 2)58,75-21ц9/10+4ц.8/25
1) 36,63+9 15/20-6 18/20= 36 63/100+2 17/20= 36 63/100+2 85/100= 38 148/100= 39 48/100= 39,48; 2) 58,75-21,9+4 32/100= 58,75+4,32-21,9= 63,07-21,9= 41,17.