\(x\times78+x\times22=328\)
\(x\times\left(78+22\right)=328\)
\(x\times100=328\)
\(x=328\div100\)
\(x=3,28\)
X x 78 + X x 22 = 328
X x (78 + 22) = 328
X x 100 = 328
X =328 :100
X = 3,28
\(x\) \(\times\) 78 + \(x\) \(\times\) 22 = 328
\(x\) \(\times\) ( 78 + 22 ) = 328
\(x\) \(\times\) 100 = 328
\(x\) = 328 \(\div\) 100
\(x\) = 3,28