Question

Determinati x astfel incat:
12-( x-1 )=2,4
3,(2) + x <9,(7) in N

Answer 1

$a).12-(x-1)=2,4 \\ 12-x+1=2,4 \\ -x=2,4-12-1 \\ -x=-10,6 \\ x=10,6 \\ b).3,(2)+x\ \textless \ 9,(7) \\ \frac{29}{9} +x\ \textless \ \frac{88}{9} \\ x\ \textless \ \frac{88}{9} - \frac{29}{9} \\ x\ \textless \ \frac{59}{9} \\ x\ \textless \ 6,(5)$