Question

Rezolva inecuatiile
a)x+2<1; b)7-x>2
c)257+x<260; d)432-x>427

Answer 1

a) x>2+1, x>3, x=3,4, ....infinit
b) 7-2>x, 5>x, x=0,1,2,3,4
c) x<260-257, x<3, x=0,1,2
d) 432-427>x, 5>x, x=0,1,2,3,4

Answer 2

b)7-x>2
x=0,1,2,3,4.
7-0>2
7-1>2
7-2>2
..........
7-4>2

c)257+x<260;
x=0,1,2.
257+0<260
257+1<260
257+2<260

d)432-x>427
x=0,1,2,3,,4
432-0>427
432-1>427
.............
432-4>427
Ex a) cred ca nu l-ai scris corect , lipseste sigur o cifra sau in loc de + vine -