Chapter ISG, Problem 1.2.4P

To determine

To calculate the given expression $z\left(2x-y\right)$

Answer to Problem 1.2.4P

  $3$

Explanation of Solution

Given information:

  $x=2,y=7,z=-1$

  $z\left(2x-y\right)$

Formula used:

Simplification of equation

Calculation:

To determine the equation

  $z\left(2x-y\right)$

Firstly put the given value in the equation

  $-1\left(2\times 2-7\right)$

Multiply 2 into 2

  $-1\left(4-7\right)$

Multiply the -1

  $-4+7$

Hence, on subtracting, the final answer is-

  $3$