Х×4=350-70 4-80=7200:10

Question

Х×4=350-70
4-80=7200:10

Answer 1

X×4=280
x=280÷4
x=70
70×4=280

Answer 2

Х•4=350-70.
х•4=280
х=280:4
х=70

4х-80=7200:10
4х-80=720
4х=720+80
4=800
х=800:4
х=200