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4 votes
A +-21 = -38

help me please​

User Barkha
by
4.1k points

2 Answers

2 votes

Answer:

a = -17

Explanation:

To solve this, we need to get A alone:

A + -21 = -38

—- +21- +21

Remember, when you do something to one side, you need to do the same thing to the other side.

Now:

A = -17!

To check:

-17 + -21 = -38

Therefore, A = -17

User Gbjbaanb
by
4.8k points
5 votes

Answer:

A= -17

Explanation:

A +-21 = -38

+21 +21

-38+21= -17

A= -17

User Sifar
by
3.6k points