bonjour a tous besoin d'aide s'il vous plait simplifier l'ecriture en fractionant a).3*x+4*x b)7*y-2*y c)1.5*x+2.3*x d)2x+4x e)5y-3y f)3a+1.5a g7b-2.3b 3*(a+b)

bonjour,

a).3*x+4*x
b)7*y-2*y = 7y-2y = 5y
c)1.5*x+2.3*x = 1,5x+2,3x = 3,8x
d)2x+4x = 6x ou
e)5y-3y = 2y
f)3a+1.5a = 4,5a
g7b-2.3b = 4,7b


3*(a+b) = 3a+3b
5*(b-3) = 5b-15
(5+c)*4 = 20+4c
(7-d)*6 = 42-6d
3*x+3*5 = 3x+15 = 3(x+5)
4*5+4*y = 20+4y = 4(5+y)
2*2-2*8 = 4-16 = -12

bonjour

a).3*x+4*x = 3x+4x = 7x

b)7*y-2*y = 7y -2y = 5y

c)1.5*x+2.3*x =1.5x+2.3x = 3.8x

d)2x+4x = 6x

e)5y-3y = 2y

f)3a+1.5a = 4.5a

g7b-2.3b = 4.7 b


3*(a+b) = 3a+3b

5*(b-3) =5b -3b

(5+c)*4 = 20 +4c

(7-d)*6 = 42 -6d

3*x+3*5= 3x+15

4*5+4*y = 20 +4y

2*2-2*8 = 4-16 = -12

6*8-6*t = 48 -6t