Question

1) Rezolvati in Q + ecuatiile: a) x . 30= 25 b) 7 . y= 13 c) t - 3 pe 5 = 7 d) 18z + 3 pe 5= 2

Answer 1

a) x = 25/30 = 5/6

b) y = 13/7

c) (t - 3)/ 5 = 7
t - 3 = 35
t = 35 + 3 = 38

d) 18z + 3/5 = 2
18z = 2 - 3/5 = 7/5
z = 7/5×18 = 7/90