`125xxy - 12xxy - 13xxy = 5 208000`
`(125-12-13)xxy=5 208 000`
`100xxy=5208 000`
`y=5208000:100=52080`
\(125y-12y-13y=5208000\Leftrightarrow100y=5208000\Leftrightarrow y=52080\)
Đáp án:
`y=52080`
Giải thích:
\(125 × y − 12 × y − 13 × y = 5208000\)
\(y × ( 125 − 12 − 13 ) = 5208000\)
\(y × 100 = 5208000\)
\(y = 5208000 : 100\)
\(y = 52080\)
\(125\times y-12\times y-13\times y=5208000\)
\(y\times\left(125-12-13\right)=5208000\)
\(y\times100=5208000\)
\(y=5208000:100\)
\(y=52080\)
