Variables:
p = uniform pants
c = baseball caps
Equations:
[tex]2p + 2c = 68[/tex]
[tex]p - c = 12[/tex]
****************************************************************************************
Step 1.
[tex] \left {{2p+2c=68} \atop {p-c=12}} \right [/tex]
Step 2.
[tex] \left {{2p+2c=68} \atop {2(p-c=12)}} \right. [/tex]
Step 3.
[tex] \left {{2p+2c=68} \atop {2p-2c=24}} \right. [/tex]
Step 4.
[tex]4p = 92[/tex]
Step 5.
[tex] \frac{4p}{4} = \frac{92}{4} [/tex]
[tex]p=23[/tex]
Step 6.
[tex]p-c=12[/tex]
[tex]23 - c=12[/tex]
[tex]23=12+c[/tex]
[tex]11=c[/tex]
Baseball Pants = $23
Baseball Caps = $11
