If `x/7=4`,then the value of `x` is

1 + 4 + 7 + 10 + … + x = 590, then the value of x is

If 3/4 is equivalent to x/(28), then the value of x is (a) 6 (b) 7 (c) 8 (d) None of the above

If [2x+y,4x,5x-7 4x]=[7 7y-13 y x+6] , then the value of x+y is x=3 , y=1 (b) x=2 , y=3 (c) x=2 , y=4 (d) x=3 , y=3

If f(x)={{:((sqrt(x^(2)+7)-4)/(x+3)",",xne-3),(k,","x=-3):} is continuous at x=-3 then the value of k is

If A(x ,\ 2),\ \ B(-3,\ -4) and C(7,\ -5) are collinear, then the value of x is

If Delta_(1) = |(7,x,2),(-5,x +1,3),(4,x,7)| and Delta_(2) = |(x,2,7),(x +1,3,-5),(x,7,4)| , then the value of x for which Delta_(1) + Delta_(2) = 0 , is

If 3^(((log_3 7))^x)=7^(((log_7 3))^x) , then the value of x will be

[{:(2x+y,4x),(5x-7,4x):}]=[{:(7,7y-13),(y,x+6):}] then the value of x,y is

If 4x+7=12, what is the value of 8x+3 ?