Question

Rezolvati in multimea numerelor rationale pozitive urmatoarele ecuatii:
a) x : 16/15 = 5/8
b) 3 (x + 1/5) = 2

Answer 1

a) x : 16/15 = 5/8
X = 5/8×16/15
X = 2/3
am simplificat pe 15 cu 5
si pe 16 cu 8

b) 3(X+1/5) = 2
X+1/5 = 2/3
X = 2/3- 1/5
X = (10-3)/15
X = 7/15