Réponses

2014-02-20T18:50:34+01:00
A) 3(x-4) = 3x-12

b) 2(y+4)+5 = 2y+13

c) 10+4(x-1) = 4x+6

d) 2(x+2)+3(3+x)
= 2x+4+9+3x
= 5x+13
2014-02-20T18:50:42+01:00
A) 3*(x-4) = 3x - 12
b) 2*(y+4) + 5 = 2y + 8 + 5 = 2y + 13
c) 10 + 4*(x-1) = 10 + 4x - 4 = 4x + 6
d) 2*(x+2) + 3*(3+x) = 2x + 4 + 9 + 3x = 5x + 13