Question

The solution for x in the pair of linear equations x +7y =5 and x – 7y= -9 is plz make it fast

Answer 1

Step-by-step explanation:

Given that:The solution for x in the pair of linear equations

x +7y =5 and x – 7y= -9

Solution:

These linear equations in two variables can be easily solved by elimination method,by these steps

Step 1: Both linear equations have same coefficient,so directly add both equations

$x + 7y = 5 \: \: \: ...eq1 \\ x - 7y = - 9 \: \: \: \: ....eq2 \\ - - - - - - - \\ 2x = - 4 \\ \\ x = \frac{ - 4}{2} \\ \\ \bold{x = - 2}$

Step2: Put the value if x in eq1

$x + 7y = 5 \\ \\ - 2 + 7y = 5 \\ \\ 7y = 5 + 2 \\ \\ 7y = 7 \\ \\ y = \frac{7}{7} \\ \\ \bold{y = 1}$

Thus,

Value of x = -2 and y = 1

Hope it helps you.

Answer 2

Answer:

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