2 years ago

What is x+y=-20 and 6x-5y=-20 with elimination method

Mathematics

1 answer:

Lerok [7]2 years ago

4 0

Answer:

Step-by-step explanation:

x + y = -20......multiply by -6

6x - 5y = -20

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

-6x - 6y = 120 (result of multiplying by -6)

6x - 5y = -20

---------------add

-11y = 100

y = -100/11 <======

x + y = -20

x + (-100/11) = -20

x - 100/11 = -20

x = -20 + 100/11

x = -220/11 + 100/11

x = - 120/11 <========

solution is : x = -100/11 and y = -120/11 or (-120/11 , -100/11)

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