Question

Perform the

ect
1. Find the sum of 5x + 20 and the
opposite of 20.
Find the sum of 5x +20 and the opposite of 20

Answer 1

`Sum = 5x`

Explanation:

Given

1: 5x + 20

2: Opposite of 20

Required

Find their sum

Suppose that a is a number; The opposite of a is -a. So, the opposite of 20 is -20.

Having said that:

The required sum is:

`Sum = 5x + 20 + (-20)`

Remove bracket

`Sum = 5x + 20 -20`

`Sum = 5x`