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Find the sum of 5 + 20 and the opposite of 20. Write an equivalent expression in standard form. Justify each step.

Sagot :

Saraheheheidn

We know that the opposite is the additive inverse.

For example, 8+(−8)=0 where 0 is the identity for addition.

Given that we have to compute the sum of 5x+20 and the opposite.

Given

5x+20

opposite of 5x+20 = -(5x+20)

so

The sum of 5x+20 and the opposite:

5x+20 + -(5x+20)

Distribute the Negative Sign

Combine Like Terms

Therefore, the sum of 5x+20 and the opposite is: 0

Thus, the equivalent expression is:

       

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