Sagot :
Bonsoir,
A = 13/21 + 29/84 = (13*4)/(21*4)+ 29/84
A = 52/84 + 29/84 = 81/84 = (27*3)/(28*3) = 27/28
B = 8 + 2 * 0,25/3 = 8 + 0,5/3 = 8 + 1/6 = 48/6 + 1/6 = 49/6
C = (2 - 3/4) ( 1 - 1/5) = (8/4 - 3/4) (5/5 - 1/5) = 5/4 * 4/5 = 1
Bonsoir,
A = 13/21 + 29/84 = (13*4)/(21*4)+ 29/84
A = 52/84 + 29/84 = 81/84 = (27*3)/(28*3) = 27/28
B = 8 + 2 * 0,25/3 = 8 + 0,5/3 = 8 + 1/6 = 48/6 + 1/6 = 49/6
C = (2 - 3/4) ( 1 - 1/5) = (8/4 - 3/4) (5/5 - 1/5) = 5/4 * 4/5 = 1