-80 | x | -1 | y | = | -440 | (1) |
100 | x | -1 | y | = | 0 | (2) |
-100 | x | - | 5 4 | y | = | -550 | (3) |
1561858258039624435572829935699250681151145097942580021044129275702615668940978305539137507013165056 Column vertical calculation:
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