`( x - 5,62 ) - 10,81 = 8,4`
`⇒ x-5,62=8,4+10,81`
`⇒ x-5,62=19,21`
`⇒ x=19,21+5,62`
`⇒ x=24,83`
$\text{__________________________}$
`96,75 + x - 47,8 = 107,5`
`⇒ 96,75 + x = 107,5 + 47,8`
`⇒ 96,75 + x = 155,3`
`⇒ x = 155,3 - 96,75`
`⇒ x = 58,55`
Xin hay nhất !