Question

Va rog ex 5,6 urgent.dau 30 puncte :D

Answer 1

5) x=3/4
Ex 6) n=23-2=21:3=7
B)12(1/3 6(n/6 4(8/9 = 12/36 6n/36 32/36 - -) n=3

Answer 2

5a
$\frac{5}{4}x= \frac{15}{16}$
5x·16=4·15
$x= \frac{15}{4}=3 \frac{3}{4}$

b)
$\frac{x+3}{2}=6$
x+3=12
x=9
c)
[tex] \frac{7}{4}+2x= \frac{17}{6} \\ \\ 24x=34-6 \\ \\ x= \frac{7}{6}=1 \frac{1}{6} [/tex]
6 a.
$\frac{23}{3n+2}=1 \\ \\ 23=3n+2 \\ \\ 23-2=3n \\ \\21=3n \\ \\ n=7$