Question

Rezolvati ecuatiile:
i |17x - 1| = 15;
ii 5(x - 1) + 4 = 2(x + 3) - 1.
Va rog sa ma ajutati cu acest exercitiu​

Answer 1

Răspuns:

i.

|17x-1|=15 deci 17x-1=15 <=> 17x=16 <=> x=16/17

sau 17x-1=-15 <=> 17x=-14 <=> x=-14/17

deci x={-14/17, 16/17}

ii.

5(x-1)+4=2(x+3)-1 <=> 5x-5+4=2x+6-1 <=> 3x=6 <=> x=6/3=2

x={2}