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123Clau
a fost răspuns

x+5+2(x-1)=x+19
am nevoie neapărat​

Răspuns :

Milde75

Răspuns:

X+5+2(2x-1==x+19

x+5+4x-2=x+19

5x,+5-2=x+19

5x-x=19-5+2

4x=16

X=16:4

X=4

Dianageorgiana794

Răspuns:

x+5+2(x-1)=x+19

x+5+2x-2=x+19

x+2x-x=19-5+2

2x=16

x=16:2=>x=8

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