August 2022 1 4 Report
укажите пару равносильных уравнений.
1) x + 3 = 5; x - 3 = -1
2) 2y + 1 = 0; 4y + 2 = 2
3) -k + 3 = 3; k - 3 = 3
4) m - 2m = 5; 2m - m = 5
помогите, прошу ^^

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