7x -3 = 5x + 1 solve for x
add three to both sides
7x = 5x + 4
subtract 5x from both sides
2x = 4
divide both sides by 2
x = 2
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5x - y + 1 = 0
Multiply the bottom equation by -1
Factored, that's 4(5x + 1)(5x + 1) or 4(5x + 1)2 If the whole thing equals zero, x = -1/5
0 because X= -1
(1, 1)