Question

Solve x + 3y = 9
3x – 3y = –13
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(–1, 3 over 10)

(1, negative 3 over 10)

(–1, ten thirds)

(1, negative ten thirds)

Answer 1

is it -1 10/3?

Answer 2

x+3y=9
solve for y in terms of x
3y=9-x
y=3-(1/3)x
plug this into second equation and solve for x
3x-3(3-(1/3)x))=-13
3x-9+x=-13
4x-9=-13
4x=-4
x=-1
plug back into first equation and solve for y
-1+3y=9
3y=10
y=10/3