Sagot :
A = 5/3-4/3*7/11
A = 5/3- (4*7)/(3*11)
A = 5/3 - 28/33
A = (5*11)/(3*11) - 28/33
A = (55-28)/33
A = 27/33
B=(4/3+3/10) / (5/2-2/5)
B=(40/30+9/30) / (25/10-4/10)
B= (49/10) / (21/10)
B = (49/10)*(10/21)
B = 49/21
C = -5 + ((3/7) / (4/5)) * 1/3
C = -5 + (3/7)*(5/4) * 1/3
C = -5 + 5/28
C = (-5*28 + 5) / 28
C = (-140+5)/28
C = -135/28
D = (210*10^-6*5*10^5)/(35*10^4)
D = (210*5*10^-6*10^5*10^-4)/35
D = (7*30*5*10^(-6+5-4))/(7*5)
D = 30*10^-5 = 3*10^-4
A = 5/3- (4*7)/(3*11)
A = 5/3 - 28/33
A = (5*11)/(3*11) - 28/33
A = (55-28)/33
A = 27/33
B=(4/3+3/10) / (5/2-2/5)
B=(40/30+9/30) / (25/10-4/10)
B= (49/10) / (21/10)
B = (49/10)*(10/21)
B = 49/21
C = -5 + ((3/7) / (4/5)) * 1/3
C = -5 + (3/7)*(5/4) * 1/3
C = -5 + 5/28
C = (-5*28 + 5) / 28
C = (-140+5)/28
C = -135/28
D = (210*10^-6*5*10^5)/(35*10^4)
D = (210*5*10^-6*10^5*10^-4)/35
D = (7*30*5*10^(-6+5-4))/(7*5)
D = 30*10^-5 = 3*10^-4