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zmey [24]
3 years ago
10

Perform the subtraction -2 - 15=

Mathematics
2 answers:
Natali5045456 [20]3 years ago
7 0

the answer is -17 :)

Marina CMI [18]3 years ago
5 0

Answer:

-17

Step-by-step explanation:

same signs; add the numbers and keep the sign

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What is 946 divided by 35
Verdich [7]

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<img src="https://tex.z-dn.net/?f=x%20%2B%20y%20%3D%209%20%2B%202x%20-%203y%20%3D%208" id="TexFormula1" title="x + y = 9 + 2x -
Vadim26 [7]

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(7,2)

Step-by-step explanation:

x + y = 9 + 2x - 3y = 8 is really two equations, and you should show this by separating x + y = 9 from 2x - 3y = 8 through the use of a comma, or the word "and," or through writing only one equation per line.

Here you have the system of linear equations

 x +   y =  9

2x - 3y = 8.

Let's solve this system by elimination.  Mult. the 1st eqn by 3, obtaining the system

3x + 3y = 27

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

5x = 35, so that x = 7.  Subbing 7 for x in x + y = 9, we get 7 + y = 9, indicating that y = 2.

Thus, the solution to this system of equations is (7,2).


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2 years ago
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