If (x,7) is a solition to the equation 5x-y=3, what is the value of x?
Here, all you have to do is substitute (7) for (y) in the equation. You can do this because all coordinates are of the form (x,y), and any number that is in the place of (y) in this format can be seen as equal to (y).
The working is shown below:
5x - (7) = 3
5x = 10
x = 2
As shown in the working above, x = 2 when y = 7.
5X-Y=3
-5X -5X
-Y=3-5X
DIVIDE BY -1 ON BOTH SIDES
Y=-3+5X
PLUG IT IN PLUG IT IN
7=3-5(X)
SOLVE
SUBTRACT BY 3 ON BOTH SIDES 4=5X
AND DIVIDE BY -5 ON BOTH SIDES 4/5=5/5X
4/5=X
CORRRECTION!!!!
-4/5!
To find the value of x, we can substitute the given point (x, 7) into the equation 5x - y = 3. Since we know that the y-coordinate is 7, we can replace y with 7 in the equation:
5x - 7 = 3
Now, we can solve this equation for x:
5x = 3 + 7
5x = 10
To isolate x, we divide both sides of the equation by 5:
x = 10/5
x = 2
Therefore, the value of x is 2.