3450 - y = 6440 : 32
3450 - y = 201.25
y = 3450- 201.25
y = 3248.75
y x 1/3 + y x 2/5 = 11/15
y x ( 1/3 + 2/5) = 11/15
y x 11/15 = 11/15
y = 11/15 : 11/15
y = 1
3450 - y = 6440 : 32
3450 - y = 201,25
y =3450 -201,25
y =3248.75
y x 1/3 + y x 2/5 = 11/15
y x( 1/3 + 2/5 ) = 11/15
y x 11/15 = 11/15
y = 11/15 : 11/15
y = 1
\(3450-y=6440:32\)
\(3450-y=201,25\)
\(y=3450-201,05\)
\(y=3248,75\)
\(y\times\dfrac{1}{3}+y\times\dfrac{2}{5}=\dfrac{11}{15}\)
\(y\times\left(\dfrac{1}{3}+\dfrac{2}{5}\right)=\dfrac{11}{15}\)
\(y\times\dfrac{11}{15}=\dfrac{11}{15}\)
\(y=\dfrac{11}{15}:\dfrac{11}{15}\)
\(y=\dfrac{11}{15}\times\dfrac{15}{11}\)
\(y=1\)