Решите уравнение 5 x + 14 =26 12 x - 7 = 81 20 x - 3 x = 16 4 x - 30 = 0

Question

Решите уравнение 5 x + 14 =26 12 x - 7 = 81 20 x - 3 x = 16 4 x - 30 = 0

Answer 1

1)5 x + 14 =26

5x=26-14

5x=12

x=2.4

2)12 x - 7 = 81

12x=81+7

12x=88

x=22:3

3)20 x - 3 x = 16

17x=16

x=16:17

4)4 x - 30 = 0

4x=30

x=7.5