Question

Evaluate each expression if $w=6,x=0.4,y=\frac{1}{2},$and $z=-3$

$w+x+z$

Short answer

Expression$w+x+z$ results into$3.4$

Step-by-step solution

- Order for simplification 

To evaluate any expression involving more than one operation, follow the below order of operations:

• First evaluate expressions inside grouping symbols like parentheses ( ) or brackets [ ].
• Evaluate the exponents.
• Perform Multiplication and division from left to right.

Perform addition and subtraction from left to right.

- Substitute given values

Substitute $0.4$for $x$, 6 for $w$and -3 for$z$ into given expression

$w+x+z=6+0.4+\left(-3\right)$

- Simplify 6+0.4+-3

Now, to simplify add the numbers to get

$\begin{array}{c}6+0.4+\left(-3\right)=6.4+\left(-3\right)\\ =3.4\end{array}$

Thus, $w+x+z=3.4$