520  SystemEq3
What is the SUM of x and y? 1

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What is the SUM of x and y?
3x - 8y = -59
7x - 2y = -21




What is the SUM of x and y?
8x + y = -20
7x + 4y = -5




What is the SUM of x and y?
9x + 8y = 52
3x + 4y = 20




What is the SUM of x and y?
9x - 2y = 39
4x - 4y = 8




What is the SUM of x and y?
2x - 4y = -16
2x + 8y = 44




What is the SUM of x and y?
6x - 5y = -3
2x - 4y = 6




What is the SUM of x and y?
5x - 2y = 12
3x - 9y = 15




What is the SUM of x and y?
3x - 7y = 20
9x + 7y = -80




What is the SUM of x and y?
8x - 2y = -26
5x - 9y = -24




What is the SUM of x and y?
4x + 9y = 28
9x - 2y = 63




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520    6 1 6 8 7 ( 28 )   -6 1 -10 -2 7 ( -10 )   [[ 18 ]]