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Ludmilka [50]
2 years ago
10

What is the result of subtracting the second equation from the first? -2x+y = 0 -7x+3y = 2

Mathematics
1 answer:
Alex2 years ago
8 0

Answer:

-5x + 2y=2

Step-by-step explanation:

- 7x + 3y = 2 \\  - 2x + y = 0 \\ subtracting \: this.we \: have \\  ( - 7x \:  + 3y - 2) - ( - 2x + y) \\  - 7x + 2x + 3y - y - 2 \\  - 5x + 2y - 2 \\ therefore \: we \: have \\  - 5x + 2y = 2

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What is the y-value when x equals -12.
Gala2k [10]

Answer:

-128 it’s on the table

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
-2(x + 2) = -2x ++ 5x -1
earnstyle [38]

Answer:

-⅗ = x

Step-by-step explanation:

Here is what you get when you distribute the -2 on the left side of the equivalence symbol and combine like-terms on the right side of the equivalence symbol:

-2x - 4 = 3x - 1

Here is the solution:

-2x - 4 = 3x - 1

-3x -3x

----------------

-5x - 4 = -1

4 +4

----------------

-5x = 3

----- -----

-5 -5

x = -⅗

I am joyous to assist you anytime.

8 0
3 years ago
What's sixty nine thousand one hundred eight written in standred form
Vadim26 [7]
The answer is 69,108
3 0
3 years ago
سر
densk [106]

Answer:

3cm

Step-by-step explanation:

A particular satellite is 15 m wide

Model of it was built with a scale of 1 cm: 5 m

=> scale of the model will be: 1/500cm and  A particular satellite is 1500 cm wide

=>1500*1/500=3(cm)

7 0
3 years ago
4×(2.1+3.9)-7)+6×(6.2-4.2)=
Helen [10]
I am pretty sure it is 29 because i did the math and that is what it comes out to
8 0
3 years ago
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