x + 350 = 61x = 618 - 35x = 268
x - 350 = 61x = 618 + 35x = 968
x × 50 = 40x = 400 / 5x = 8
x ÷ 50 = 40x = 400 * 5x = 20000
520 - x = 2x = 520 - 2x = 494
520 ÷ x = 2x = 520 / 2x = 20
x + 350 = 61
x = 618 - 35
x = 268
x - 350 = 61
x = 618 + 35
x = 968
x × 50 = 40
x = 400 / 5
x = 8
x ÷ 50 = 40
x = 400 * 5
x = 20000
520 - x = 2
x = 520 - 2
x = 494
520 ÷ x = 2
x = 520 / 2
x = 20