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KATRIN_1 [288]
3 years ago
6

X - 9 = 21 What does x =

Mathematics
1 answer:
Slav-nsk [51]3 years ago
5 0

Answer:

x=30

Step-by-step explanation:

You have to isolate for x. This means you need to somehow get x on one side of the equation all alone. In this case it is x-9=21 which means some unknown number x with 9 subtracted from it is equal to 21. When we bring the -9 over to the other side to get the x all alone, we have to switch the sign of the -9 so it becomes +9. This means x=21+9, and if you add that you'll get 30!

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Answer:

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Step-by-step explanation:

In this problem we have that

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6 0
4 years ago
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Answer:

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7 0
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Serga [27]

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6 0
4 years ago
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dmitriy555 [2]
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3 years ago
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