I need to check my answer!

Kara has 21 collectible buttons to sell. She sells the small buttons for $3 and the large buttons for $4, and earns a total of $68. If the small buttons are represented by x and the large buttons are represented by y, which of the following systems of equations can be used to calculate the number of large and small buttons sold?

Question

I need to check my answer!

Kara has 21 collectible buttons to sell. She sells the small buttons for $3 and the large buttons for $4, and earns a total of $68. If the small buttons are represented by x and the large buttons are represented by y, which of the following systems of equations can be used to calculate the number of large and small buttons sold?

rebeccaxhawaii · Answer

no

rebeccaxhawaii · Answer

x+y=21
3x+4y=68

parrisc1 · Answer

that is what I got

rebeccaxhawaii · Answer

then use elimination to find out x and y

rebeccaxhawaii · Answer

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fortytherapper · Answer

Then take those two equations and rewrite them so it reads y= for both