oblicz : a) 1 cała i 2/3 * 9/10 = 4 całe i 3/16 * 8 = ( 3/4 ) do potęgi 3 = b) 12 * 3 całe i 1/4 = 3 całe i 1/3 * 2 całe i 2/5 = ( 1 cała i 1/7 ) do potęgi 2 = / - kreska ułamkowa * - mnożenie

a)  1 i 2/3 * 9/10 = 5/3 * 9/10 = 45/30 = 1 i 15/30 = 1 i 1/15  4 i 3/16 * 8 = 67/16 * 8 = 536/16 = 33 i 8/16 = 33 i 1/2 (3/4)³ = 27/64 b) 12 * 3 i 1/4 =12 * 13/4 = 156/4= 39 3 i 1/3 * 2 i 2/5 = 10/3 * 12/5 = 120/15 = 8 (1 i 1/7) ² = (8/7)² = 64/49 

a) 1 2/3*9/10=5/3*8/10=3/2=1 1/2 4 3/10*8=43/10*8/1=344/10=34 4/10 (3/4)^3=27/64 b) 12*3 1/4=12/1*13/4=3*13=39 3 1/3*2 2/5=10/3*12/5=2*4=8 (1 1/7)^2=(8/7)^2=64/49=1 1/2