x + 350 = 618x = 618 - 350x = 268
x - 350 = 618x = 618 + 350x = 968
x × 50 = 400x = 400 / 50x = 8
x ÷ 50 = 400x = 400 * 50x = 20000
520 - x = 26x = 520 - 26x = 494
520 ÷ x = 26x = 520 / 26x = 20
x + 350 = 618
x = 618 - 350
x = 268
x - 350 = 618
x = 618 + 350
x = 968
x × 50 = 400
x = 400 / 50
x = 8
x ÷ 50 = 400
x = 400 * 50
x = 20000
520 - x = 26
x = 520 - 26
x = 494
520 ÷ x = 26
x = 520 / 26
x = 20