In one sentence, how do we know if a number is a solution?

Question

In one sentence, how do we know if a number is a solution?

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Ivy 2 weeks 2021-09-08T12:49:38+00:00 2 Answers 0

Answers ( )

    0
    2021-09-08T12:50:42+00:00

    Answer:

    if there is an equal sign near it

    0
    2021-09-08T12:51:05+00:00

    There is a equal sign

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45:7+7-4:2-5:5*4+35:2 =? ( )