Question

только самое последнее пж

Answer 1

1)98/(х-9)=7
х-9=98/7
х=14+9=23

2) (3х+1)/14=3/7
(3х+1)/2=3
3х+1=6
х=(6-1)/3=5/3

Answer 2

98/(x-9)=7
98=7(x-9)
98=7x-63
98+63=7x
161=7x
x=23

(3x+1)/14=3/7
3x+1=(3/7)*14
3x+1=6
3x=5
x=5/3=1 2/3