(25-х)-20=-30 (х-13)+20=-20

Question

(25-х)-20=-30
(х-13)+20=-20

Answer 1

1)(25-х)-20=-30
25-х=-30+20
25-х=-10
х=25-(-10)
х=35
2)(х-13)+20=-20
х-13=-20-20
х-13=-40
х=-40+13
х=-27

Answer 2

(25-x)-20=-30
25-x=-30+20
25-x=-10
-x=-10-25
x=35