Question

7a+4b-2c if a=8,b2 and c=17

Answer 1

The answer is 30.
7(8)+4(2)-2(17)=30

Answer 2

The value of 7a+4b-2c is 30.

Solution:

Given,

Value of a = 8 ----- (1)

Value of b = 2 ----- (2)

Value of c = 17 ----- (3)

To find the value of the given equation,
`7a+4b-2c` ----- (4)

Substituting (1), (2) and (3) in (4) we get,

`7*8 + 4*2 - 2*17`

On multiplying the terms we get,

`56+8-34 = 64-34 = 30`

So, the value of the given equation is 30.