Question

ex acestea fara n
Va rog!!!

Answer 1

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Answer 2

e) $\dfrac{5}{8}$x+$\dfrac{1}{2}$+$\dfrac{1}{3}$x=$\dfrac{1}{2}$x+4

$\dfrac{15x+12+8x}{24}$=$\dfrac{x+8}{2}$

$\dfrac{23x+12}{24}$=$\dfrac{x+8}{2}$

2(23x+12)=24(x+8)

46x+24=24x+192

46x-24x=192-24

22x=168

x=$\dfrac{168}{22}$=$\dfrac{84}{11}$

h) $\dfrac{9}{5}$x-$\dfrac{8}{10}$x+2$\dfrac{1}{3}$=1$\dfrac{7}{9}$x

$\dfrac{9}{5}$x-$\dfrac{4}{5}$x+$\dfrac{7}{3}$=$\dfrac{16}{9}$x

$\dfrac{27x-12x+35}{15}$=$\dfrac{16}{9}$x

$\dfrac{15x+35}{15}$=$\dfrac{16}{9}$x

9(15x+35)=15·16x

135x+315=240x

315=240x-135x

315=105x

x= $\dfrac{315}{105}$=3

k) $\dfrac{4}{5}$x+1$\dfrac{1}{2}$=$\dfrac{1}{10}$x+19$\dfrac{1}{2}$

$\dfrac{4}{5}$x+$\dfrac{3}{2}$=$\dfrac{1}{10}$x+$\dfrac{39}{2}$

$\dfrac{8x+15}{10}$=$\dfrac{x+195}{10}$

10(8x+15)=10(x+195)

80x+150=10x+1950

80x-10x=1950-150

70x=1800

x=$\dfrac{1800}{70}$=$\dfrac{180}{7}$