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How many pairs of values of ( x,y) satisfy the equation 3x + y <= 10 , given that x and y are positive integers.

 Jul 19, 2020
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3x can only =        3   6   or  9    corresponding to  x = 1         2          3

so y can only be                                                      y = 7         4          1        Three pairs

 Jul 19, 2020

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