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Aditaamv
a fost răspuns

Rezolvati in ''Q'' ecuatiile :

a)7x+14=0
b)2x-12=0
c)2,1y-6,3=0
d)11x-8=0

Răspuns :

Taisiatalpa
a)7x+14=o
7x=0-14
7x=-14
x=-14:7
x=-2
b)2x-12=0
2x=0+12
2x=12
x=12:2
x=6
c)2,1y-6,3=0
2,1y=0+6,3
2,1y=6,3
y=6,3:2,1
y=3
d)11x-8=0
11x=0+8
11x=8
x=8:11
x=0.7

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