3 years ago

If 3x+2y=33 and 2x+3y=42 what does x+y equal?

Mathematics

1 answer:

xenn [34]3 years ago

6 0

Answer:

Step-by-step explanation:

3x+2y=33

2x+3y=42

Add the two equations together:

5x+5y=75

Divide both sides by 5:

x+y=15

Hope this helps!

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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

lyudmila [28]

Answer:

$-\frac{21}{2}$

Step-by-step explanation:

We can solve this system just by summing each side of the equation:

So, both left sides will be sum, and both right sides too.

The resulting expression will be:

$(3-y)+(3-y) = 6+21$

Ordering and solving both sides:

$6-2y=27\\-2y=27-6\\y=\frac{21}{-2}$

Hence, the value to the system is $-\frac{21}{2}$

It's important to combine both equation, because the exercise is asking for the solution of the system.

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Step-by-step explanation:

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2 years ago

The equation V= 1/3 Bh gives the volume V of a pyramid, where B is the area of the base and h is the height. Solve this equation

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Easey

times both sides by 3
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Step-by-step explanation:

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3 years ago

Help plz????Real answers only!!!

Contact [7]

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Answer: 0

Explanation:

I hope this helped!

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2 years ago

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