Q60.

Evaluate each expression if $x = - 2, y = 6,$ and $z = 5 .$

60. $5 x + 2 y - z$

Verified

Answer

The value of the expression $5 x + 2 y - z$ is $- 3 .$

1Step-1 –Concept of evaluating the expression

The value of the variable in the expression can be calculated by putting the value of variable in the expression

2Step-2 –Identifying the conditions

The given equation is $5 x + 2 y - z .$ and the values of the variables are, $x = - 2, y = 6, z = 5 .$

3Step-3 –Simplify the expression

$\begin{matrix} 5 x + 2 y - z = 5 (- 2) + 2 (6) - (5) \\ = - 10 + 12 - 5 \\ = - 15 + 12 \\ = - 3 . \end{matrix}$