Tìm x : x - 12 = 45 x + 4 = 56 x × 6 = 36 x ÷ 5 = 45

2 câu trả lời

`x - 12 = 45`

`x = 45 + 12`

`x = 57`

`x + 4 = 56`

`x = 56 - 4`

`x = 52`

`x × 6 = 36`

`x = 36 : 6`

`x = 6`

`x ÷ 5 = 45`

`x = 45 × 5`

`x = 225`

$\text{Bài làm:}$

$\text{x - 12 = 45}$

$\text{x = 45 +12}$

$\text{x = 57}$

$\text{Vậy x = 57}$

$\text{x + 4=56}$

$\text{x = 56 - 4}$

$\text{x = 52}$

$\text{Vậy x = 52}$

$\text{X x 6 = 36}$

$\text{X = 36 : 6}$

$\text{X = 6}$

$\text{Vậy X = 6}$

$\text{x : 5 = 45}$

$\text{x = 45 x 5}$

$\text{x = 225}$

$\text{Vậy x = 225}$