Question

90
) Verificati care dintre elementele multimii 4 = {-5, - 2, -1,0), 4, 10) ente solutie a
ecuatiei:
(a) - x - 4 = 1;
b) 2x - 6 = -6
0 (-200): x=20;
(d) x (-15) = 30; e) 1 - 3x = x+13
1) 10+2x = 0
Câte timbre​

Answer 1

-x-4=1

-x=5

x=-5

2x-6=-6

x-3=-3

x=0

-200:x=20

x=-10

x(-15)=30

x=-2

1-3x=x+13

-4x=12

x=-3

10+2x=0

2x=-10

x=-5