Question 1198509
.


The most straightforward way is to check given answers by substituting values into equations.


The good strategy is to start from second equation,  since it is shortest.


So,  substitute given values into second equation.


Quickly you will find that values  (B)  fit this equation.


After that,  check values  (B)  for the rest of equations.


Doing this way, you will get right answer quickly and without having any difficulties  (without any headache).



///////////////



After seeing the solutions of other tutors,  it is a mystery for me,

why and for what reason do they agitate for  1000  tons of unnecessary calculations,

when easy and a straightforward way lies on the surface and is just pointed.