Verified Answer :

maddip

8a + -28b + 15 x c  

just combine like terms basically.

Answer: \(8a-28 b+15c\)

Step-by-step explanation:

The given expression : \(4(2a) + 7(-4b) + (3 \times c \times 5).\)

To write the above expression in standard form , we will simplify each term as

\(4(2a)= 4\times2 a = 8a\)               (1)

\(7(-4b)=7\times-4b= -28 b\)           (2)

\((3 \times c \times 5)= 3\times5\times c= 15c\)        [using commutative property]         (3)

Using (1) , (2) and (3) , we get

The standard form of the given expression :

\(8a-28 b+15c\)