Uranus is believed to have 13 more satellites than Neptune also Saturn is now believed to have 8 more than twice the number of satellites as Uranus .total number of satellites for these planets is 103.how many for each planet?
N = U - 13
S = 2U + 8
U + N + S = 103
Substitute U-13 for N and 2U+8 for S in the third equation and solve for U. Insert that value into the first equations to solve for N and S. Check by putting all values into the third equation.