Question

1. rezolva in multimea Q ecuatiile: a)9 intreg 3/5-(2intreg 3/5 -x)=4 b) -4intreg 1/5+(x-5intreg 4/5)=2intreg 1/2 va rog urgnet / asta este supra

Answer 1

a) 9 3/5 = (45+3)/5= 48/5

2 3/5 = (10+3)/5 = 13/5

48/5 -13/5+x= 4

35/5 +x=4

x=4-7

x = -3

b) -4 1/5 = (-4+1)/5 = -3/5

5 4/5= 25+4)/5= 29/5

2 1/2= (4+1)/2 = 5/2

-3/5 +x-29/5 = 5/2

x-32/5 = 5/2

x= 5/2 + 32/5 amplifici pe prima fractie cu 5, a doua cu 2

x= 50/10 + 64/10

x= 114/10= 57/5