1)14x + 6(2 + 4) =
2)5y+3(2+y)=
3)4(a+5)+10=

1 ) 14x + 36

2 ) 8y + 6

3 ) 4a + 30

Пошаговое объяснение:

1 )

14x + 6 ( 2 + 4 )

= 14x + 6 ( 6 )

= 14x + 6 * 6

= 14x + 36

2 )

5y + 3 ( 2 + y )

= 5y + 6 + 3y

= 5y + 3y + 6

= 8y + 6

3 )

4 ( a + 5 ) + 10

= 4a + 20 + 10

= 4a + 30