bettyrose69
02.01.2020 •
Mathematics
Mrs.lin is planning her daughters birthday party. at parties r us the fee is $80 plus $10 per child. at birthday palace, the fee is $150 plus $5 per child. write and solve an equation to determine how many children must be invited for the costs to be equal?
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Ответ:
80 + 10x = 150 + 5x
10x = 70 + 5x
x = 14
Check:
80 + 10 (14) = 220
150 + 5 (14) =220
Ответ: