Sagot :
bonsoir
A=(-5)*(4x+3)
A = - 20 x - 15
B=(-1,1)*(2b-5)
B = - 2.2 b + 5.5
C=(-7y-6)*(-4)
c = 28 y + 24
D=-2(3t-1)
D = - 6 t + 2
Réponse:
A=(-5)*(4x+3) = -5*4x - 5*3= -20x -15
B=(-1,1)*(2b-5)= -1.1*2b + 1.1*5 = -2.2b +5.5
C=(-7y-6)*(-4) = 7*4y + 4*6= 28y +24
D=-2(3t-1)=-2*3t + 2*1 = -6t + 2