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Chapter 1: Q5 (page 10)

Find the value of the variable.

15-z=0

Short Answer

Expert verified

The value of the variable is z=15.

Step by step solution

01

Step 1. Subtract 15.

To find the value of variable z in the equation 15-z=0, subtract 15 from both sides of the equation.

15鈭�z鈭�15=0鈭�15

02

Step 2. Collect like terms.

Remove all the brackets and collect the like terms.

15鈭�15鈭�z=0鈭�15

03

Step 3. Simplify the equation.

To further simplify, combine the like terms.

15鈭�15鈭�z=0鈭�150鈭�z=鈭�15鈭�z=鈭�15

04

Step 4. Multiply by -1.

In order to obtain z, multiply the equation -z=-15from both sides with -1.

05

Step 5. Verify the value.

In order to verify the value of z, substitute 15 for z into the equation 15-z=0.

15鈭�15=00=0True

Hence, the value of the variable is z=15.

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