x + 6 = 10, 6, 4, 10, 3, x + 7 = 19, 6, 4, 10, 12, 11 = x - 5, 16, 14, 12, 11, 2x = 14, 10, 3, 7, 5, 3x=36, 12, 13, 11, 9, 7x = 49, 4, 5, 7, 6, 2x+4=12, 4, 5, 6, 3, 3x-7 =20, 3, 4, 6, 9, 8x+6=70, 6, 5, 8, 7, 4=16-2x, 6, 5, 3, 4, 34-6x =-2, -4, 6, -6, 8, 50-7x =-6, 4, -8, 8, -6, x÷4 = 4, 16, 1, 8, 18, 4÷x = 4, 1, 16, 5, 3, x÷4+2 = 4, 16, 14, 8, 18.

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