Question

Resolva a equação 2/5y - 3/4 = 3/20y *

Answer 1

Oie, Td Bom?!

2/5 y - 3/4 = 3/20 y

20(2/5 y - 3/4) = 20 . 3/20 y

20 . 2/5 y - 20 . 3/4 = 3y

4 . 2y - 5 . 3 = 3y

8y - 15 = 3y

8y - 3y = 15

5y = 15

y = 15/5

y = 3

Att. Makaveli1996