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4) 5x - y =9
-5x + 2y = -8


Sagot :

Answer:

y= 1

x = 2

Step-by-step explanation:

solving simultaneously

by elimination

[tex]5x - y = 9 \\ - 5x + 2y = - 8[/tex]

add the two terms left

y=1

substitute y= 1 to eq. 1

then 5x - 1 =9

x =2