SOLUTION: Cameron has 11 adult fantail goldfish. This is 7 fewer fantail goldfish than twice his friend Julia has. Write and solve an equation to determine the number of fantail goldfish t

Question 937037: Cameron has 11 adult fantail goldfish. This is 7 fewer fantail goldfish than twice his friend Julia has. Write and solve an equation to determine the number of fantail goldfish that Julia has.
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = number of fish cameron
y = number of fish julia
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x = 11
x = 2y - 7
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put the system of linear equations into standard form
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x = 11
x - 2y = -7
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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answer:
x = number of fish cameron = 11
y = number of fish julia = 9
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now by substitution:
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x = 11
x = 2y - 7
11 = 2y - 7
2y = 11 + 7
2y = 18
y = 18/2
y = 9
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answer by substitution:
x = number of fish cameron = 11
y = number of fish julia = 9
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