Question

Ребят помогите 1) 0.2=5x 2) 3.5x=2 1/3 3)7-x=0 4)15-7x=0 5)3x-5=x 6)3x+2=5x-7 Только нужно правильный ответ 7 класс

Answer 1

1) 0.2=5х
х=0.2:5
х=0.04
2) 3.5х=21/3
х=21/3:3.5
х=7:3.5
х=2
3) 7-х=0
х=7-0
х=7
4) 15-7х=0
7х=15
х=15:7
х=15/7
5) 3х-5=х
3х+х=5
4х=5
х=5/4
6) 3х+2=5х-7
3х-5х=-7-2
-2х=-9
х=4.5

Answer 2

1. 0.2 = 5x x = 0.2/5 x = 0.04

2. 3.5x = 2 1/3 First convert 2 1/3 to an improper fraction: 2 1/3 = 7/3 3.5x = 7/3 x = (7/3) / 3.5 x = 7/3 * 2/7 x = 2/3

3. 7 - x = 0 x = 7

4. 15 - 7x = 0 15 = 7x x = 15/7

5. 3x - 5 = x 2x = 5 x = 2.5

6. 3x + 2 = 5x - 7 4 = 2x x = 2

Итак, ответы:

1. x = 0.04
2. x = 2/3
3. x = 7
4. x = 15/7
5. x = 2.5
6. x = 2