Robertagherghinis13ask
a fost răspuns

nnr reale x-15=-2
3-x=5
2x-1=-3
4(3x+4)-1=7x
repede​

Răspuns :

Samsenguruiask
x-15=-2
x=13

3-x=5
x=-2

2x-1=-3
x=-1

4(3x+4)-1=7x
12x+16-1=7x
12x+15=7x
12x-7x=-15
5x=-15
x=-3

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