Toán 2 . ( x – 1 ) + 5 . 8 = 4 . 15 giúp mình vs 24/07/2021 By Anna 2 . ( x – 1 ) + 5 . 8 = 4 . 15 giúp mình vs
2 . ( x – 1 ) + 5 . 8 = 4 . 15 ⇔ 2 . ( x – 1 ) = (4.15) – (5.8) ⇔ 2x -2 = 60 – 40 ⇔ 2x -2 = 20 ⇔ 2x = 22 ⇔ x = 11 Trả lời
2.(x – 1) + 5.8 = 4 .15 => 2.(x – 1) + 40 = 60 => 2.(x – 1) = 60 – 40 => 2.(x – 1) = 20 => x – 1 = 20 : 2 => x – 1 = 10 => x = 10 + 1 => x = 11 Vậy x = 11 Học tốt ^^ @viet Trả lời
2 . ( x – 1 ) + 5 . 8 = 4 . 15
⇔ 2 . ( x – 1 ) = (4.15) – (5.8)
⇔ 2x -2 = 60 – 40
⇔ 2x -2 = 20
⇔ 2x = 22
⇔ x = 11
2.(x – 1) + 5.8 = 4 .15
=> 2.(x – 1) + 40 = 60
=> 2.(x – 1) = 60 – 40
=> 2.(x – 1) = 20
=> x – 1 = 20 : 2
=> x – 1 = 10
=> x = 10 + 1
=> x = 11
Vậy x = 11
Học tốt ^^ @viet