bonjour,
exercice 3:
a: 6x + 3x = 9x
b: 8 + 2x = pas possible
c: -4x - 5x = -9x
d: 5x +3 = pas possible
e: 4xcarré - 2xcarré = 2xcarré
f: 5x + 4xcarré = 4xcarré + 5x
g: -9xcarré + 4xcarré = -5xcarré
h: 9xcarré + xcarré = 10xcarré
exercice 4:
a: 7 x 3x = 21x
b: 5x x 2x = 10xcarré
c: 6 x 3xcarré = 18xcarré
d: 4x x 3 = 12x
e: 2xcarré x4 = 8xcarré
f: 6x x 2x = 12xcarré
g: -3x x 5x = -15xcarré
h: 3x (-4x) = 3x x (-4x) = -12xcarré
exercice 5
a: 7 + 3x = pas possible
b: 7 x 3x = 21x
c: 7x x 3x = 21xcarré
d: 7x + 3x = 10x
e: -5 x 2x = -10x
f: -5 + 2x = pas possible
g: -5x x 2x = -10xcarré
h: -5x + 2x = -3x
i: -8x x (-3x) = 24xcarré
j: -8x - 3x = -5x
k: -8 x (-3x) = 24x
l: -8 -3x = pas possible
m: 10 - 3x = pas possible
n: 10x x (-3x) = -30xcarré
o: 10 x (-3x): -30x
p: 10x - 3x = 7x
bon après-midi :)
