Asked by connie
REINY, Thank you for your answer and the answer is obviously correct when you go back and do the multiplying ......however , I do not just want the answer, I desperately wish to understand from start to finish how you got the answer. I am sorry if I seem stupid, really , but how did you get 2x = 18 , x=9 where did the 18 come from? I am so confused. Thanks for your help!!!! connie Original Question
solve if x=student price and y =adult price and 2y + 5x=77 and 2y + 7x=95 what are the price for admission for both adult and child. Your Answer:subtract them:
2x = 18
x=9
sub into the first:
2y + 45 = 77
2y = 32
y = 16
solve if x=student price and y =adult price and 2y + 5x=77 and 2y + 7x=95 what are the price for admission for both adult and child. Your Answer:subtract them:
2x = 18
x=9
sub into the first:
2y + 45 = 77
2y = 32
y = 16
Answers
Answered by
Steve
You didn't read his response carefully. The first instruction was "subtract them".
Assuming you understand the context of the problem, he meant to subtract one equation from the other:
2y+7x=95
2y+5x=77
----------- subtract and the 2y-2y goes away!
2x = 18
so, x=9
smooth sailing from there on.
Assuming you understand the context of the problem, he meant to subtract one equation from the other:
2y+7x=95
2y+5x=77
----------- subtract and the 2y-2y goes away!
2x = 18
so, x=9
smooth sailing from there on.
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