Question

x + x + x = 33 , x + y + y = 31 and then x + y = ?​

Answer 1

Answer:

21

Step-by-step explanation:

x+x+x=33

3x=33/3

x=11

x+y+y=31

as we know x=11

then

11+y+y=31

2y=31-11

2y=20

y=20/2

y=10

We got

x=11

y=10

then x+y=?

11+10=21

Answer 2

Concept: Each term in a linear equation has an exponent of 1, and when this algebraic equation is graphed, it always produces a straight line. It is called a "linear equation" for this reason.

Given: x + x + x = 33 ,

           x + y + y = 31

To find:  x + y

Solution:

As it is given that

x + x + x = 33

3x = 33

x = 11

Substituting the value of x in x + y + y = 31, we get

11 + 2y = 31

2y = 31 - 11

2y = 20

y = 10

Therefore, x + y = 11 + 10 = 21

Hence, x + y = 21.

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