Question

Evaluate the following expression using the values given:

Find 4x - y - 2z if x = -2, y = 3 and z = -2

Answer 1

Required Solution:

Given:

The values of :

• $\rm { x = -2}$

• $\rm { y = 3}$

• $\rm { z = -2}$

To find:

$\rm { 4x - y - 2z }$

Calculation:

Substitute the values in the expression:

$\rm {⇢ 4x - y - 2z }$

$\rm {⇢ 4(-2) - (3) - 2(-2) }$

$\rm {⇢ -8 - 3 + 4 }$

$\rm {⇢ -11+4 }$

$\rm \red {⇢ -7 }$ (Ans...)

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Answer 2

Answer:

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Step-by-step explanation:

= 4x - y - 2z

= 4 × (-2) - 3 - 2 × (-2)

= -7