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rezolvand in N ecuatia 2x-9=-19 solutia este....

Răspuns :

2x-9=-19
2x=-19+9
2x=-10
x=-10:2
x=-5
2x - 9 = -19
2x = - 19 + 9 
2x = - 10 
x = - 10 : 2 
x = - 5