Question

3x + 4y + 5z, value x = -1,y = 2 ,z = -3​

Answer 1

Answer:

= 3(-1) + 4(2) + 5(-3)

= -3 + 8 + (-15)

= -3 + 8 - 15

= -3 -7

= (-10)

Answer 2

GivEn:

• 3x + 4y + 5z

To finD:

• Value of 3x + 4y + 5z where, x = -1, y = 2, z = -3

Solution :

We have given equation 3x + 4y + 5z and have to find the value of 3x + 4y + 5z by putting the values of x = -1, y = 2 and z = -3

Substituting value in given equation:

3x + 4y + 5z

⇒ {3× (-1)} + (4×2) + (5×{-3})

⇒ -3 + 8 - 15

⇒ -18 + 8

⇒ -10

Hence,

The value of 3x + 4y + 5z on the given value of x, y and z is -10