Chapter 1.2, Problem 25WE

To determine

The value of the expression $2\left[x+4\left(y+z\right)\right]$ when $t=6,x=3,y=4,$ and $z=5$ .

Answer to Problem 25WE

  $78$

Explanation of Solution

Given information:

The given expression is $2\left[x+4\left(y+z\right)\right]$ .

Calculation:

Substitute the value of $x=3,z=5$ and $y=4$ in the given expression.

  $\begin{array}{c}2\left[3+4\left(4+5\right)\right]=2\left[3+4\cdot 9\right]\\ =2\left[3+36\right]\\ =2\cdot \left(39\right)\\ =78\end{array}$

Therefore, the value of the expression $2\left[x+4\left(y+z\right)\right]$ when $x=3,z=5$ and $y=4$ is $78$ .