# What minus 1 equals 20

When someone asks you what minus 1 equals 20, they want to know a number that you can subtract 1 to get 20. In this guide, I’m going to show you how to calculate what minus 1 equals 20

If you are in a hurry 21 minus 1 equals 20.

## What is Minus?

Minus refers to an arithmetic operation that involves taking a value, vector, matrix, and other quantities from another to get the difference. It is also commonly referred to as subtraction.

## Synonyms of Minus

Subtraction, deduction, discount, reduction, diminution, and subduction

## How to calculate what minus 1 equals 20

First, write the problem as an Expression

Step 1: Z – 1 = 20

Step 2: Replace the letters with the values that you already have

Step 3: Add -20 to both sides so as to balance the equation

Z –1 + 1= 20 + 1

Step 4: Simplify the equation

Z + 0 = 20+ 1

Z = 20 + 1

Z = 21

Therefore 21 minus 1 equals 20

## Other Solved examples

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## What minus x equals y calculator

Number minus negative