Question

Find the values of x+y and x-y for the
equations : 4x + y = 16; x+4y= 34​

Answer 1

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Answer 2

HEY MATE HERE IS THE ANSWER ✌️

Step-by-step explanation:

4x + y= 16 --------------(1)

And

x+4y=34

Multiplying both sides by 4

4x+16y= 136----------------(2)

Sub (1) from(2)

4x+16y-4x-y= 136-16

15y=120

Y=120/15

Y=8

So putting in (1)

X= 2

x+y = 2+8= 10

x-y = 2-8 = -6

HOPE IT HELPS YOU