30816—x = 958 x * 8 = 256 x : 6 =123

Question

30816—x = 958
x * 8 = 256
x : 6 =123

Answer 1

1) 30816 - х = 958
    -х = 958-30816
    -х = -29858 /*(-1)
     х - 29858
2) х*8=256
    х= 276:8
    х= 32
3) х:6=123
    х=123*6
    х=738

Answer 2

30816-x=958
x=30816-958
x=29858
30816-29858=958

x×8=256
x=256÷8
x=32
32×8=256

x÷6=123
x=123×6
x=738
738÷6=123