ericnunez52 ericnunez52

14-11-2019
Mathematics

contestada

please help with this i will give 10 points

please help with this i will give 10 points class=

Respuesta :

ClarySmith ClarySmith

14-11-2019

Answer:

(5, -1) and (10, 2)

Step-by-step explanation:

*For (5,y)

When x is 5, y is ?

3x-5y=20

3×5-5y=20

15-5y=20

-5y=20-15

-5y=5

y= 5/-5

y= -1

When x is 5, y is -1

(5,-1)

*For (x,2)

When x is ?, y is 2

3x-5y=20

3x-5×2=20

3x-10=20

3x=20+10

3x=30

x=30/3

x=10

When x is 10, y is 2

(10,2)

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