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`
$\text{Bài làm:}$
$\text{x - 12 = 45}$
$\text{x = 45 +12}$
$\text{x = 57}$
$\text{Vậy x = 57}$
$\text{x + 4=56}$
$\text{x = 56 - 4}$
$\text{x = 52}$
$\text{Vậy x = 52}$
$\text{X x 6 = 36}$
$\text{X = 36 : 6}$
$\text{X = 6}$
$\text{Vậy X = 6}$
$\text{x : 5 = 45}$
$\text{x = 45 x 5}$
$\text{x = 225}$
$\text{Vậy x = 225}$