Question

1. x∈Z
dacă \frac{3}{5} = \frac{4-x}{10}

Answer 1

In speranta ca acesta este exercitiul
3/5= (4-x)/10
5(4-x)=3*10=30
4-x=30/5=6
-x=6-4=2
x=-2 :)

Answer 2

3/5=4-x/10⇒
⇒5(4-x)=3×10⇒
20-5x=30⇒
-5x=30-20⇒
-5x=10⇒
x=10/-2⇒
x=-2.x∈Z
succes