Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
0
=
a
+
u
*
b
+
v
*
c
+
u
*
v
*
d
,
0
=
e
+
u
*
f
+
v
*
g
+
u
*
v
*
h
f
o
r
u
,
v
Math Input
Natural Language
Math Input