Question

a)2x-5,3=0,78
b)12-(x-1)=2,4
c)3,(2)+x<9,(7)inN
va rog sa m-a ajutati sa rezolv aceste 3 intrebari
(DAU COROANA)

Answer 1

$a).2x-5,3=0,78 \\ 2x=0,78+5,3 \\ 2x=6,08 \\ x= \frac{6,08}{2} \\ x=3,04 \\ b).12-(x-1)=2,4 \\ 12-x+1=2,4 \\ -x=2,4-12-1 \\ -x=-10,6 \\ x=10,6$
$c).3,(2)+x\ \textless \ 9,(7) \\ \frac{29}{9} +x\ \textless \ \frac{88}{9} \\ x\ \textless \ \frac{88}{9} - \frac{29}{9} \\ x\ \textless \ \frac{59}{9} \\ x\ \textless \ 6,(5)$