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3x + 1y =1.75
2x + 4y =2.00
To find the cost of the choclate bar we must eliminate the gum from our equation.
One way to do that is to Multiply the first equation by 4 and substract the two equations
12x +4y = 7.00 now substract the 2nd equation from first
- 2x +4y = 2.00 you get the following equation
10x= 5.00 solve for x by dividing both sides by 10
solve for y by plugging in value for x in either equation.
2*(.5) + 4*y = 2.00