Question

tìm x biết x+280:25-7,2=14

Answer 1

x+280:25-7,2=14

x+280:25=14+7.2

x+280:25=21.2

x+280=21.2*25

x+280=530

       x=530-280

       x=250

Answer 2

\(x+280:25-7,2=14\)

\(x+11,2-7,2=14\)

\(x+11,2=14+7,2\)

\(x+11,2=21,2\)

\(x=21,2-11,2\)

\(x=10\)

Answer 3

X+[280:25]=14+7,2

X+11,2=21,2

X=21,2-11,2

X=10