Решите уравнения д) 18 - 10x = 0 е) 15 - 7x = 0 з)2x - 4x - 1 =2 ж) x -3 = 2x + 1

Question

Решите уравнения
д) 18 - 10x = 0
е) 15 - 7x = 0
з)2x - 4x - 1 =2
ж) x -3 = 2x + 1

Answer 1

- 10x = - 18
10x = 18
x = 1,8

- 7x = - 15
7x = 15
x =15/7
x = 2целых 1/7

-2x = 3
2x = - 3
x = - 3/2
x = - 1,5

x - 2x = 3 + 1
- x = 4
x = - 4