I think it’s A But I’m not sure
Answer:
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<em> 3 3/3 so add that equal 3 4/3 </em>
<em>so it doesn't matter if its greater than </em>
<em>subtract and equals 2/3
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I: x-3*y=12
II: 2*x+6*y=60
add I*2 to II:
2*(x-3y)+2x+6y=2*12+60
2x-6y+2x+6y=24+60
4x=84
x=21
insert x=21 into I:
21-3y=12
9-3y=0
9=3y
3=y
is the only solution (21,3), sou you probably have another option which you didn't copy :)
1/5 of the class you multiply the fractions and simplify it