Question

15. Solve for the specified variable: - х + 7 8 - 10; for y.

Answer 1

Answer:

$y=80-\frac{8x}{7}$

Step-by-step explanation:

15). Given equation is,

     $\frac{x}{7}+ \frac{y}{8}=10$

     Multiply the equation by 8,

     $8(\frac{x}{7}+ \frac{y}{8})=10\times 8$

     $\frac{8x}{7}+y=80$

     Subtract $\frac{8x}{7}$ from both the sides of the equation,

     $\frac{8x}{7}+y-\frac{8x}{7}=80-\frac{8x}{7}$

     $y=80-\frac{8x}{7}$

     Therefore, value of the variable 'y' will be,

     $y=80-\frac{8x}{7}$