Pomocy 2 równania i sprawdzenia
a) 7x-4=x+2
SPr.
b)-5x+4=x-8
SPR
a)
7x-4=x+2
7x-x = 6
6x = 6 /:6
x = 1
Spr.
7*1-4=1+2
7-4=3
3=3
b)
-5x+4=x-8
-5x-x = -8-4
-6x=-12 /:(-6)
x = 2
-5*2+4=2-8
-10+4 =- 6
-6=-6
Prosze i licze na naj ! :]
7X-X=2+4
6X=6 /:6
x=1
-5x-x=-8-4
-6x=-12 /:-6
x=2
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a)
7x-4=x+2
7x-x = 6
6x = 6 /:6
x = 1
Spr.
7*1-4=1+2
7-4=3
3=3
b)
-5x+4=x-8
-5x-x = -8-4
-6x=-12 /:(-6)
x = 2
Spr.
-5*2+4=2-8
-10+4 =- 6
-6=-6
Prosze i licze na naj ! :]
7x-4=x+2
7X-X=2+4
6X=6 /:6
x=1
-5x+4=x-8
-5x-x=-8-4
-6x=-12 /:-6
x=2