Odpowiedź :
Odpowiedź:
5x-5=9x-7
5x-9x=5-7
-4x=-4/: -4
x=1
5×+5=9x+7
5x-9x=-5+7
-4x=4/: -4
x=-1
5x-5=9x+7
5x-9x=5+7
-4=12/: -4
x=-3
5x+5=9x-7
5x-9x=-7-5
-4x=-12/: -4
x=3
;>
5(x-1)=9x-7
5x-5 = 9x-7
-5+7 = 9x-5x
2 = 4x /4
0,5 = x
x = 0,5
5(x+1)=9x+7
5x+5 = 9x+7
5-7 = 9x-5x
-2 = 4x /:4
-0,5 = x
x = -0,5
5(x-1)=9x+7
5x-5 = 9x+7
-5-7 = 9x-5x-12 = 4x /4
-3 = x
x = -3
5(x+1)=9x-7
5x+5=9x-7
5+7 = 9x-5x
12 = 4x /4
x = 3
Liczę na naj ;D