Question

Tìm x:

\(\left(2x-1\right):7=2^2+3^2\)

Answer 1

\(\left(2x-1\right):7=2^2+3^2\)
\(\Rightarrow\left(2x-1\right):7=4+9\)
\(\Rightarrow\left(2x-1\right):7=13\)
\(\Rightarrow2x-1=13.7\)
\(\Rightarrow2x-1=91\)
\(\Rightarrow2x=92\)
Vậy \(x=46\)
 

Answer 2

(2.x-1):7=2²+3²

=>(2.x-1):7=4+9

=>(2.x-1):7=13

=>2.x-1=13.7

=>2.x-1=91

=>2.x=91+1

=>2.x=92

=>x=92:2

=>x=46