Yulianas5 Yulianas5

17-08-2018
Mathematics

contestada

3x+2y=18 , 8x+6y=50 if x represents the cost of a birthday card and y represents the cost of a thank you note how much does each birthday card cost

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me72003 me72003

30-08-2018

(-9x-6y=-54) +(8x+6y=50)= -x=-4; x=4
3(4)+2y=18
12+2y=18
2y=6 ; y=3
Each birthday card costs 4

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