jaylahslappy jaylahslappy

09-04-2021
Mathematics

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which expression can you substitute for x in 5x+y=8 to solve the system below?
5x+y=8
x+4y=2

which expression can you substitute for x in 5xy8 to solve the system below 5xy8 x4y2 class=

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habtamuAbebaw habtamuAbebaw

09-04-2021

Answer:

x =30/19 and y =2/19

Step-by-step explanation:

5x + y = 8

x + 4y = 2

then

5x + y = 8

-5(x +4y =2)

5x + y = 8

-5x - 20y = - 10

0 +y - 20y = -2

- 19y = -2

y = 2/19 then

5x + 2/19 = 8

5x = 152-2/19

5x/5 =150/19 *1/5

x =30/19

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