Question

Given that 2 x − 2 y = 23 Find x when y = 9

Answer 1

Answer:

20.5

Step-by-step explanation:

2x - 2y = 23

2x - 2(9) = 23

2x -  18 = 23

2x = 23 + 18

2x = 41

x = 20.5

Answer 2

Answer:

$x=41/2=20.5$

Step-by-step explanation:

So we have the equation:

$2x-2y=23$

And we want to find x when y is 9.

So, substitute y for 9 and solve for x:

$2x-2(9)=23$

Multiply:

$2x-18=23$

Add 18 to both sides:

$2x=41$

Divide both sides by 2:

$x=41/2=20.5$

So, our answer is 20.5