Sagot :
A = 18x - 63x = -45x
B = ...
C = 7/4 + 9/16 = (7*4)/(4*4) +9/16 = 28/16 + 9/16 = 37/16 = ...
D = (-11*3) / (12*3) - (1*2) / (18*2) = -33/36 - 2/36 = -35/36
B = ...
C = 7/4 + 9/16 = (7*4)/(4*4) +9/16 = 28/16 + 9/16 = 37/16 = ...
D = (-11*3) / (12*3) - (1*2) / (18*2) = -33/36 - 2/36 = -35/36
A=(-9)x(-2+7) = (-9) x (5) = -45
B=(-4)² - 3x (-8)-50 = 16 - (24) -50 = 16+24-50 = -10
C= 7/4 + 3/8 x 3/2 = 7/4 + 9/16 = 28/16 +9/16 = 37/16
D= - 11/12 - 1/18= -198/216 - 12/296 = -210/296 = - 105/148
B=(-4)² - 3x (-8)-50 = 16 - (24) -50 = 16+24-50 = -10
C= 7/4 + 3/8 x 3/2 = 7/4 + 9/16 = 28/16 +9/16 = 37/16
D= - 11/12 - 1/18= -198/216 - 12/296 = -210/296 = - 105/148