Question

2x+y=29 2y+z=34 2z+x=15 what is value of y​

Answer 1

Step-by-step explanation:

Firstly find the value of x by eq 3

2z+x=15

x=15-2z

Now find z by eq 2

2y+z=34

z=34-2y

now put all these value in eq 1

2x+y=29

2(15-2z)+y=29

2[15-2(34-2y)]+y=29

2(15-67+4y)+y=29

30-136+8y+y=29

-106+9y=29

9y=29+106

9y=135

y=15