2: 3x + 5 = 11, x - 9 = -7, -4x = -8, 7x+3 = 3x+11, 3: x - 5 = -2, 4x+1 = 3x+4, 9x = 6x+9, 4: (x-1)²=9, x² = 16, 5: x² - 12 = 13, 7x - 10 = 25, 3x+6 = x+16, -4x = -20,

Solving equations

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