Nathan has $322 worth of $11 and $13 stock shares. The number of $11 shares is seven more than twice the number of $13 shares. How many of each type of share does he have?

1 answer

let x = the number of $11 shares
and y = the number of $13 shares

set up a system of equations

11x + 13y = 322
x = 2y + 7

substitute x in the first equation for the value in the second and solve
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