Solve the equation for y. 5x – 7y = 10 A. y=-7/5x-7/10 B.y=7/5x 10/5 C. 5/7x-10/7 D. -5x-7
5x-7y=10
-7y=10-5x
y=(10-5x)/-7
y=10/-7-5x/-7
y=5x/7-10/7
hence C is correct option
Option: C is the correct answer.
\(y=\dfrac{5x}{7}-\dfrac{10}{7}\)
We are given a linear equation in terms of variable x and y as:
\(5x-7y=10\)
Now, we are asked to solve the equation for y i.e. we are asked to find the value of y in terms of the variable x.
Now, we add 7y on both the sides of the equation to get:
\(5x=10+7y\\\\i.e.\\\\10+7y=5x\)
Now, we subtract 10 from both the sides of the equation to get:
\(7y=5x-10\)
Now, we divide both side of the equation by 7 to get:
\(y=\dfrac{5x-10}{7}\\\\\\i.e.\\\\\\y=\dfrac{5x}{7}-\dfrac{10}{7}\)