Question

Rezolvați următoarele ecuații unde x apartine Z: a)x-5<7. b)6+x>9 c)x-2 mai mic sau egal decat 3. d)-x+13 mai mare sau egal decat 5. e)4-x<12. f)-x-7>-2. Varog frumos cu rezolvare!

Answer 1

x∈Z
a) x-5<7
x<12
x={ ......-11,-10,-9 , ...........0,1,2,3,4,5,6,7,8,9,10,11}
b) 6+x>9
x>3 
x= {4,5,6,7,8,9,10 , ......................,999,1000,. ...... }
c) x-2≤3
x≤5
x={.....-9,-8, ...... 0,1,2,3,4,5}
d) -x+13≥5
-x≥-8
x≤8
x={.....-9,-8, ......,0,1,2,3,4,5,6,7,8}
e) 4-x<12
-x<-8
x>8
x= {9,10,11,12,.. .....999,1000 ,,,,,,,,,,}
f) -x-7>-2
-x>5
x<-5
x={..........-9,-8,-7,-6}