Question

how do you solve this by using a proportion?

x-2/x+3 = 3/8?

help por favor/:

Answer 1

\[\frac{x-2}{x+3}=\frac{3}{8}\]cross and time
\[(x-2)*8=(x+3)*3\]\[8x-16=3x+9\]\[8x-3x=9+16\]\[5x=15\]\[x=\frac{15}{5}\]\[x=5\]

Answer 2

ahh this helped soo much! thank you(:

Answer 3

x-2/x+3=3/8

using componendo and dividendo
we have
x-2+x+3/x-2-x-3=3+8/3-8

which implies
2x+1/(-5)=11/(-5)

or 2x+1=11
or2x=10
therefore x=5