`x × 2 +x × 3 - 75 = 260`
`=>x xx (2+3) - 75 = 260`
`=>x xx 5=260+75`
`=>x xx 5=335`
`=>x=335:5`
`=>x=67`
\(x\times2+x\times3-75=260\)
\(x\times\left(2+3\right)-75=260\)
\(x\times5-75=260\)
\(x\times5\) \(=260+75\)
\(x\times5\) \(=335\)
\(x\) \(=335
:
5\)
\(x\) \(=67\)