Question 1085946: There is a huge clearance sale at your favorite clothing store. Shirts are on sale for $3 and pants are on
sale for $7. You buy a total of 13 items from the store and pay a total of $71. Write a system of equations and solve using substitution or elimination to find how many shirts and how many pants you have purchased. You must show all your work.
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! x=shirts
y=pants
x+y=13, number equation
3x+7y=71, money equation
multiply top by -3
-3x-3y=-39
add to the bottom one
4y=32
y=8 pants@$7=$56.
x=5 shirts@$3=$15
add to $71,
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