Question

Помогите с уравнениями.
7+9x=35

10x-8=27

Answer 1

7+9х=35
9х=35-7
9х=28
х=3

10х-8=27
10х=27+8
10х=35
х=3,5

Answer 2

3.1

Answer 3

7+9х=35
9х=35-7
9х=28
х=