So we are given a system:

Substitute x = 2 we get the system:

Multiply the first equation by -5 and the second by 2 we get the system:

Adding the two equations we get :

We find the value of y by using any of the other equations like this:

Final solution:
90 or 100 something like that.
<span>2y-x=11</span>
<span>-x=11-2y
</span><span>x=-11+2y
</span><span><span>x=2y-11</span><span>
</span></span>
She poured 1 full cup and 2/3 of another cup. The answer would be 1 and 2/3 cups.
5/3= 1 and 2/3