Question

a) 2supra5+x=2; b)x-3supra5=2supra7; c)7supra3-x=1supra5; d)x:3supra4=3

Answer 1

punctul a) primul pas: aduci la acelasi numitor, apoi treci elementele fara x in partea dreapta si cele cu x in stanga.

Answer 2

a)(2/5)+x=2
x=2-2/5
x=(2·5-2)/5
x=8/5

b)x-(3/5)=2/7
x=2/7+3/5
x=(2·5+3·7)/35
x=31/35

c) (7/3)-x=1/5
x=7/3-1/5
x=(7·5-1·3)/15
x=32/15

d) x:(3/4)=3
x=3·3/4
x=9/4