Répondre :
Réponse:
1. 7x-2x=11-4
5x=7
x=7/5
2. -17a =-13-12-211
-17a=-236
a=-236/-17
a=236/17
3. 2x-8x=-7-55
-6x=-62
x=-62/-6
x=31/3
4. -23x-2x=9+40
-21x=49
x=49/-21
x= -7/3
Réponse:
1. 7x-2x=11-4
5x=7
x=7/5
2. -17a =-13-12-211
-17a=-236
a=-236/-17
a=236/17
3. 2x-8x=-7-55
-6x=-62
x=-62/-6
x=31/3
4. -23x-2x=9+40
-21x=49
x=49/-21
x= -7/3