Question

yadi 2y+z=17,2z+x=15,2x+y=10 to x+y+z=?​

Answer 1

Answer:

14

Step-by-step explanation:

In the given question, there are three variables and three equations. We have to find x, y and z and then, add them. It is a big process and time taking method. Let us use a shortcut way for quick solution. Let us add the given equations.

$2y + z + 2z + x + 2x + y = 17 + 15 + 10 \\ 3(x + y + z) = 42 \\ x + y + z = 14$

In simple method, x+y+z=14.

Thank you

Answer 2

Answer:

14

Step-by-step explanation:

adding all the given equations we get

$3( x+ y + z) = 17 + 15 + 10 = 42$

so, on dividing the LHS and RHS by3we get

$x + y + z = 42 \div 3 = 14$

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