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Aleksandr-060686 [28]
3 years ago
12

Show work and answer .............

Mathematics
1 answer:
Lelechka [254]3 years ago
8 0

Answer:

1. 5

2. 5

3. -3

4.y= -1

5. 5

Step-by-step explanation:

1.)x- 2y= -25 ; y=3x

x-2(3x)=(-25)

x-6x=(-25) ; -5x=(-25) ; x=5

2.) 5x+3y =40; x=y

8y=40; y=5

3.) 4x-3y= -27; x=3y

4(3y)-3y= -27; 12y-3y=-27; 9y=-27; y=-3

4.)x-y=9; x=-8y; -8y-y=9; -9y=9; y=-1

5.) 2x+2y=30; y=2x ; 2x+2(2x)=30; 6x=30; x=5

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Multiplication between integers will produce integers too

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* addition

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can be stated in the formula:

From the available answer choices

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Step-by-step explanation:

5 0
3 years ago
3 (a - 1) + 31 - 11a = 4 ( 2a + 3)
nikitadnepr [17]

Answer:

-⅖

Step-by-step explanation:

We need to simplify the given equation and find out the value of a , as ,

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=> 16a = -28-12

=> 16a = -40

=> a = -2/5

<h3>• Hence the value of a is -⅖ .</h3>
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