Question: 11. Solve: +21= (-30) If no solution exists, type none in the box. If infinite solutions exist, type infinite in the box. 12. Solve

11. Solve: +21= (-30) If no solution exists, type "none" in the box. If infinite solutions exist, type "infinite" in the box. 12. Solve the systems of linear equations using the substitution method. y=3x+10 50x+25y=65 (, ) TT ( 13, 1/1) (z) (15)

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