# HOW DO I SOLVE THIS EQUATION -11+Z=7

HOW DO I SOLVE THIS EQUATION -11+Z=7
You can still ask an expert for help

• Questions are typically answered in as fast as 30 minutes

Solve your problem for the price of one coffee

• Math expert for every subject
• Pay only if we can solve it

Alix Ortiz
To solve an equation, you need to isolate the variable using inverse operations.
For −11+Z=7, you have −11 being added to Z. The inverse operation of addition is subtraction, so you need to subtract −11 on both sides:
-11+Z=7
−11+Z−11+Z−(−11)=7=7−(−11)
Subtacting a negative number is the same as adding a positive number so you can simplify the equation to:
−11+Z−(−11)=7−(−11)
-11+Z+11=7+11
Simplifying then gives:
−11+Z+11=7+11
Z=7+11=18
The solution of the equation is then Z=18