[tex]c) \frac{3}{4} = \frac{2y-1}{8} \\
3*8=4(2y-1) \\
24 = 8y - 4 \\
28= 8y \\
y= \frac{28}{8} \\
y = \frac{7}{2} \\
d) \frac{15}{2} = \frac{8}{3y-2} \\
15(3y-2) = 2* 8 \\
45y-30= 16 \\
45y= 30+16 = 46 \\
y= \frac{46}{45} \\
e) \frac{2y}{6} = \frac{y+1}{4} \\
2y*4 = 6(y+1) \\
8y= 6y + 6 \\
2y= 6 \\
y= \frac{6}{2} = 3 \\
f) \frac{y-4}{3} = \frac{y-5}{2} \\
3(y-5)=2(y-4) \\
3y-15=2y-8 \\
y=7 \\
[/tex]
Nu mai am spatiu sa rezolv urmatoarele ecuatii. Foloseste-te de ce ai invatat la proportii. Succes!
