Write out the two-equation given

In other to use the elimination method, we ensure that one of the variables in the two-equation has the same coefficient.
By observation, it can be seen that the coefficient of the x in the two equations is the same. So we add two equations together because they have different signs to eliminate x
i.e.

Therefore,

Substitute the value of y in any of the two equations to get the value of x. Let us pick equation(1)


Hence, x=7.5, y=8 (7.5,8)