Need these in 10 mins: Solve by substitutions 1) X+Y=6 3x+2y=15 2 2x+Y=20 3) 6x-SY=r

Question

Need these in 10 mins: Solve by substitutions
1) X+Y=6
3x+2y=15
2 2x+Y=20
3) 6x-SY=r

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Ngọc Hoa 1 month 2021-08-13T20:17:00+00:00 1 Answers 0 views 0

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    2021-08-13T20:18:14+00:00

    3 is the answer just had this on my quiz

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )