Question

Urgent
Rezolveti ecuatiile
a)0,1x+3,2<3,5,x€N
b)3,7x+2,5 mai mare sau egal decat 2,5x+1,06,x€Z

Answer 1

a)0,1x < 3.5-3.2
0.1x< 0.3 
x < 0.3:0.1
x < 3
x E { 0, 1 , 2}

b) 3,7x+2.5 > sau egal 2,5x+1.06 
3,7x> sau egal 2,5x+1.06-2.5
3.7x > sau egal 2.5x+ 1.44 
1.2x > sau egal cu 1.44
0.1x > sau egal cu 0.12
x > sau egal cu 12 
x E {1,2,3,4,5,...,12}