Question

[Hà Phương]

tìm x

8dm2x X+Xx200cm2=10dm2

Answer 1

[HT.Phong (9A5)]

\(8dm^2\times x+x\times200cm^2=10dm^2\)

\(8dm^2\times x+x\times2dm^2=10dm^2\)

\(x\times\left(8dm^2+2dm^2\right)=10dm^2\)

\(x\times10dm^2=10dm^2\)

\(x=10dm^2:10dm^2\)

\(x=1\)

Vậy: x = 1