3x+ay=3 x=4 y=3 then find k
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3(4) + a(3) = 3
12 + 3a = 3
12 - 3 = - 3a
9 = -3a
a = 9/-3
a = -3
12 + 3a = 3
12 - 3 = - 3a
9 = -3a
a = 9/-3
a = -3
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