Question

find y if x+y=10 and 3y - x=6

Answer 1

Answer:

Y=4

Step-by-step explanation:

from equation 1, x=10-y

substituting that to equation 2, we get

3y-10+y=6

or, 4y=16

or, y=4

I hope this helps, lemme know if it's incorrect.

Answer 2

Answer:

x + y = 10

=> y = 10 - x

.･. The value of y = 10-x

In the second equation put the value of y in its place.

3y - x = 6

=>3(10-x) - x = 6

=> 30 - 3x - x = 6

=> 30 -4x = 6

=> 30-6 = 4x

=> 24 = 4x

=> 24/4 = x

=> 6 = x

The value of x = 6.

Then, the value of y is = 10-6 = 4.

I hope it will be helpful to you.