Question

determinati toate numerele intregi x care verifica relatia: a) |2x-9|=0
b) |3x-17|
c)|4x+23|=0
d)|3x-20|=0
plz repede dau coroana​

Answer 1

a)I2x-9I=0

9-2x=0

-2x=-9

x=9/2=4,5

b)I3x-17I=0

17-3x=0

-3x=-17

x=17/3

c)I4x+23I=0

4x+23=0

4x=-23

x=-23/4

d)I3x-20I=0

20-3x=0

-3x=-20

x=20/3

Obs. Modulul cu efectuari negative isi schimba valorile numerelor de la negativ la pozitiv si invers