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Rezolvati ecuatiile
8x=16
8x-4=0
13x-9=4
3(x+5)=15
4x+5=3(x+1)+7
8x+2=3(x+1)+4x


Răspuns :

1)8x=16
x=16:8
x=2
2)8x-4=0
8x=+4
x=4/8=1/2
3)13x-9=4
13x=13
x=13/13=1
4)3(x+5)=15
3x+15=15
3x=15-15
3x=0
x=0
5)4x+5=3(x+1)+7
4x+5=3x+3+7
4x-3x=3+7-5
x=5
6)8x+2=3(x+1)+4x
8x+2=3x+3+4x
8x-3x-4x=3-2
x=1
Sper ca te-am ajutat!