Sagot :
Réponse:
2x-5 = 5x+1
2x-2x-5=5x-2x+1
-5=3x+1
-5-1=3x
-6=3x
-6:3=3x:3
-2=x
Réponse:
●2x-5=5x+1
2x-5x=1+5
-3x=6
x=6÷-3=-2
●5x-6=-x+3
5x+x=3+6
6x=9
x=9÷6=1,5
●3x+2=x-10
3x-x=-10-2
2x=-12
x=-12÷2=-6
●3-7x=3x+2
3-2=3x+7x
1=9x
x=1÷9
Réponse:
2x-5 = 5x+1
2x-2x-5=5x-2x+1
-5=3x+1
-5-1=3x
-6=3x
-6:3=3x:3
-2=x
Réponse:
●2x-5=5x+1
2x-5x=1+5
-3x=6
x=6÷-3=-2
●5x-6=-x+3
5x+x=3+6
6x=9
x=9÷6=1,5
●3x+2=x-10
3x-x=-10-2
2x=-12
x=-12÷2=-6
●3-7x=3x+2
3-2=3x+7x
1=9x
x=1÷9