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17-12-2020
Mathematics

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4x - 9y = 1
2x + y = -5

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bm11805 bm11805

17-12-2020

Answer:

y=1

x=5/2

Step-by-step explanation:

4x-9y=1

(2x+y=-5)-2

4x-9y=1

-4x-2y=10

_________

-11y=11

y=-1

4x-9y=1

4x-9(1)=1

4x=10

x=10/4

x=5/2

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