Question

Dau coroana si 30 de puncte!
Doar c, d, e, f, h,i!
Va rog explicati! Clasa a VI-a.

Answer 1

[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!