1, If a #b = 2a + b for all a and b, then what is the value of 4#3?
2x4+3 =11
2, school-coundown-28-2007(-4)
If x@y-=xy-2x, what is the value of (5@3)-(3@5) ?
(5x3-2x5)-(3x5-2x3)=-4
3,,AMC8-2001-12
if a@b=(a+b)/(a-b) then (6@4)@3=?
4, The operation # is defined as a # b = a + a/b. What is the value of 6 # 2?
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