58
Math Tools
Example 2×2 System
Solve:
+
=
1
3
2
3
37
90
x
y
−
=
2
5
1
5
28
75
x
y
Sys-solv
%
2×2
system
<
Enter
equations
1
P
3
< <
2
P
3
<
37
P
90
<
2
P
5
<
U
1
P
5
<
28
P
75
<
Solution
<
Change
number
format (if
needed)
r
<
Change
number
format (if
needed)
r
<
Example 3×3 System
Solve: 5x – 2y + 3z =
-
9