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16-01-2020
Mathematics

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Solve the system using addion
7x+2y=-13
-7x+y=25

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Аноним Аноним

16-01-2020

Answer:

x = -3

y = 4

Step-by-step explanation:

7x + 2y = -13

-7x + y = 25

3y = 12

-7x + y = 25

y = 4

-7x + 4 = 25

y = 4

-7x = 21

y = 4

x = -3

there is only 1 solution for this equation is (-3,4)

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