Question

Solve for x : 2x + y = 8, y= - 6​

Answer 1

Solution :

Given :

• value of y is –6.

So :

$\: \: \: 2x + y = 8$

$= > 2x + ( - 6) = 8$

$= > 2x - 6 = 8$

$= > 2x = 8 + 6$

$= > 2x = 14$

$= > x = \frac{14}{2}$

$= > x = 7.$

Hence :

• The value of x is 7.

Answer 2

To Find :-

• The value of x

Given :-

• y = - 6

Therefore, putting the value of y in the equation, we get,

$\sf \green \succ \: {2x + y = 8} \: \: \: \: \: \: \: \\ \sf \green \succ \:{2x + ( - 6) = 8} \\ \sf \green \succ \:{2x = 8 + 6} \: \: \: \: \: \: \: \\ \sf \green \succ \:{2x = 14} \: \: \: \: \: \: \: \: \: \: \: \: \\ \sf \green \succ \:{x = \frac{ \cancel{14}}{ \cancel 2} } \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \sf \green \succ \:{x = 7} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$