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5x=4x+1 va rog mult ,mai am una 5x+17=2

Răspuns :

5x= 4x+1

5x-4x= 1

1x= 1

x= 1

5x+17= 2

5x= 2-17

5x= -15

x= -15/5

x= -3

5x=17-2=15

X=15:5=3

3*5=3*4+1