Sagot :
U= 4/3- (5x1)/(3x3)
U= 4/3-5/9
U= (4x3)/(3x3)-5/9
U= 12/9-5/9
U= 7/9
E= (-4+6/7)/ 3/4
E=(-28/7 +6/7)/ 3/4
E= -22/7 / 3/4
E=-22/7 x 4/3
E= -22x4 / 7x3
E= -88/21
S= 1960/4 x 99/49
S= (1960x99) / (4x49)
S= 194040/196
S= 990
Bonsoir
U = 4/3-5/3x1/3
U=-1/3x1/3
U=-1/3
E =(-4 + 3 x 2/7) / 3/4
E=(-1x2/7)/3/4
E=-2/7/3/4
E=-2/7x4/3
E=-8/21
S= 35 x 56/4 x 99/49
S=1960/4x99/49
S=194 040/196
S=196
Voila bonne soirée
By Vetteliste