exam Maths Puzzle Numerical Ability

3x-6y=30 ---- (1)
6x+y =34 ---- (2)
2*(1)implies 6x-12y=60 ---- (3)
(2)-(3) implies 13y=-26 i.e.,y=-2

Read Solution (Total 0)

exam Other Question

How do I simplify a logarithm such as this{{{10^(-10log3)}}}
I have tried to solve by finding the value of the logarithm but I don't think that is the right way to answer because 9x^2+24x > -16