ashlensheren ashlensheren

15-11-2019
Mathematics

contestada

Solve the system by substitution.
-x+2y=57
10x=y

Respuesta :

bayosanuade bayosanuade

15-11-2019

Answer: x = 3

y = 30

Step-by-step explanation:

substitute y = 10x into the first equation , we have

- x +2(10x) = 57

-x + 20x = 57

19x = 57

x = 57/19

x = 3

Substitute x = 3 into the second equation

10(3) = y

Therefore y =30

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