Tìm x, biết: x – 2 × 9,5 = 0 x – 3 × 7 = 56 30/10/2021 Bởi Jasmine Tìm x, biết: x – 2 × 9,5 = 0 x – 3 × 7 = 56
x – 2 × 9,5 = 0 => x – 19 = 0 => x = 19 + 0 => x = 19 x – 3 × 7 = 56 => x – 21 = 56 => x = 56 + 21 => x = 77 Bình luận
`x- 2. 9,5=0`
`x – 19=0`
`x =0+19`
`<=>x=19`
`x – 3 .7=56`
`x -21=56`
`<=>x=77`
x – 2 × 9,5 = 0
=> x – 19 = 0
=> x = 19 + 0
=> x = 19
x – 3 × 7 = 56
=> x – 21 = 56
=> x = 56 + 21
=> x = 77