Question

добрый день, помогите решить? х-20/77*77/80=3,5

Answer 1

х-20/77*77/80=3.5
х-1/4=3.5
х=3.5+0.25
x=3.75

Answer 2

х-20/77*77/80=3.5
х-1/4=3.5
х=3.5+1/4
х=3.5+0.25
х=3.75