the base of an isosceles triangle has length 8. what can you say about the lengths of the legs?
You are supposed to post new question in new threads....but I'll answer it anyways.
1.) $\displaystyle 7x+3=10x-9$
Add 9 to both sides:
$\displaystyle 7x+12=10x$
Subtract 7x from both sides:
$\displaystyle 12=3x$
Divide both sides by 3:
$\displaystyle x=4 $
2.) $\displaystyle 4x+6=6x-3$
Add 3 to both sides:
$\displaystyle 4x+9=6x$
Subtract 4x from both sides:
$\displaystyle 9=2x$
Divide both sides by 2:
$\displaystyle x=\frac {9}{2}$