Question

3x+6y=3900;x+3y=1300 from substitution methof

Answer 1

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Answer 2

Concept Introduction:

To find solution by substitution method one variable has to be expressed in terms of another variable then the equation has to be solved.

Given: The equations $3x+6y=3900$ and $x+3y=1300$.

To Find:

We have to find the value of, x and y.

Solution:

According to the problem,

$3x+6y=3900$

⇒$x+2y=1300$

⇒$x=1300-2y$

Putting value of x in another equation,

$x+3y=1300$.

⇒$1300-2y+3y=1300$

⇒$y=0$

∴ $x=1300-0=1300$

Final Answer:

The value of $x=1300$ and $y=0$.

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