Question

x+21=35,3;3×+1 <32,02 în N

Answer 1

x+21=35,3
x=35,3-21
x=14,3

3x+1<32,02
3x<32,02-1
3x<31,02
x<31,02:3
x<10,34
x∈{0,1,2,3,4,5,6,7,8,9,10}

Answer 2

x+21=35,3
3x+1<32,02

x+21=35,3
x=35,3-21
x=14,3

3x+1<32,02
3x<32,02-1
3x<31,02
x<31,02:3
x<10,34
x€N { 10,9,8,7,6,5,4,3,2,1,0.}