PLEASE ANSWER! I NEED HELP ASAP!!

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d-21.4=87.9

Can someone PLEASEEEEEE tell me how to solve it!!

3 answers

Also, this is for the Equations with Multiplication and Division Quiz Part 2 on Connexus (Connections Academy)
just add 21.4 to both sides
109.3=d. Add 21.4 and 87.9=109.3