a teacher created two way table for four different classrooms the tables track whether each student has an after school job or n
ot and whether they are in art class only, music class only, both classes, or neither class. 
1 answer:
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First we'll multiply the second equation by -2
Now let's add the new equation and the first one.
We found y's value. We'll plug it in one of the equations to find x's value.
Solution ;
(9, -6)