1/2(10s+14d)=1/2(10x5+14x4)

To solve this equation, we will first simplify both sides of the equation:

1/2(10s + 14d) = 1/2(10 * 5 + 14 * 4)

Distributing the 1/2 on both sides:

5s + 7d = 5 * 5 + 7 * 4

Now, multiply and simplify further:

5s + 7d = 25 + 28

5s + 7d = 53

Therefore, the solution to the equation is:

5s + 7d = 53