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MariettaO [177]
3 years ago
5

Solve by inspection: X+4=15

Mathematics
2 answers:
amid [387]3 years ago
7 0

x + 4 = 15

- 4        -4

x = 11

You would subtract 4 because you need to isolate the x to get the value of x. You would subtract it to both sides because whatever you do on one side, you have to do it to the other side.

Snowcat [4.5K]3 years ago
7 0

Explanation:

x+4=15

subtract by 4 both sides of an equation.

x+4-4=15-4

then simplify.

15-4=11

<u><em>x=11 is the final answer.</em></u>

Hope this helps!

Thanks!

Have a great day!

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1) Jo Anne needs to do a speech in her English class that can't be more than 4 minutes
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We will define a variable ( x ) as the time it took for Jo Anne to give her speech at home.

The time taken to give her speech must always be less than 4 minutes. We can express this mathematically using an inequality as follows:

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Jo Anne gave her speech which was 10 seconds less than the one she practised at home. We will convert the time in seconds to minutes as follows:

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The time taken by Jo Anne to complete her speech in English class can be represented as:

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Using the range of time that Jo Anne could take in delivering her speech in the class would be:

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