Question

Rezolvati ecuatia 2x - 5,3 =0,78 aflati x numar natural, daca 3x+1 <32,02

Answer 1

ex 1:2x-5,3=0,78
2x =0,78+5,3
2x=6,8
x=6,8÷2
×=3,4

ex 2:3x+1<32,02
3x<32,02+1
3x<33,02
x<33,02÷3
x<11,15
=> solutia este ={ 11,10,9,8,7,6,5,4,3,2,1}
p.s: coroanaa??

Answer 2

2x-5,3=0,78
2x=0,78+5,3
2x=6,08
x=6,08:2=3,04

3x+1<32,02
3x<32,02-1
3x<31,02
x<31,02:3
x<10,34
x∈N
x∈{0,1,2,3,4,5,6,7,8,910}