Which expression can you substitute in the indicated equation to solve.
3x - y = 5
x+2y = 4
A : 2y - 4 for x in 3x - y = 5
B: 4 - x for y in 3x - y = 5
C: 3x - 5 for y in 3x - y = 5
D: 3x - 5 for y in x+2y = 4
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