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When you solve the system shown by the elimination method, which statement is true?
y + 3x = 10
−y − 3x = 10
A.
You eliminate y; the sum of the coefficients of y is zero. Then, you can solve for x.
B.
There is no solution; x and y are eliminated and you get the false statement 0 = 20.
C.
There are infinitely many solutions; x and y are eliminated and you get the true statement 0 = 0.
D.
You eliminate x; the sum of the coefficients of x is zero. Then, you can solve for y.