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14 votes
14 votes
What is the value of y in the equation y − 7 = 21? 7172128

User AnthonyI
by
2.9k points

1 Answer

22 votes
22 votes

28

Step-by-step explanation

to solve this we need to isolate y, to do that, we apply the addition property of equality, it states that If two expressions are equal to each other, and you add the same value to both sides of the equation, the equation will remain equal.

so

Step 1

given


y-7=21

add 7 in both sides


\begin{gathered} y-7=21 \\ y-7+7=21+7 \\ y=28 \end{gathered}

therefore, the answer is

28

I hope this helps you

User Berdir
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2.8k points