alguiein alguiein

07-05-2021
Mathematics

contestada

If { 4x+y=13
x−y=2

, then y=

Respuesta :

sushilakadel2018 sushilakadel2018

10-05-2021

Answer:

2.5

Step-by-step explanation:

Taking eguation i

4x+y=13

x= 13-y/4

Taking equation ii

x-y = 2

Substituting the value of x in eq i from ii

x- y =2

13-y/4- y=2

13-y-y=2×4

13-2y =8

-2y=8-13

y=-5/-2

Therefore y=2.5

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