m4rcussawy3roubrho m4rcussawy3roubrho

06-11-2019
Mathematics

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10) -4x + 9 y = 9
x-3y=-6

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KurdishPotato KurdishPotato

06-11-2019

Answer:

y = 5

x = 9

Step-by-step explanation:

multiple the second equation by 4 then add both equations up

4×(x -3y = -6 ) ➡ 4x - 12y = -24

4x -12y - 4x +9y = 9 - 24 ➡ -3y = -15

y = 5 use this value to find x

x - 3×5 = -6

x = -6 + 15

x = 9

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