Question

x+21=35,3;3x+1<32,02 in 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
x=35,3-21
x=14,3

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

S={1,2,3,4,5,,6,7,8,9,10}

Sper ca te-am ajutat. Mult succes! :*