s = L -18
5L - 4s = 100
Substitute L-18 for s in the second equation and solve for L. Insert that value into the first equation to solve for s. Check by putting both values into the second equation.
the smaller of two numbers is 18 less than the larger number. If 5 timnes the larger number esxceeds four times the smaller by 100. Find the numbers.
3 answers
10,28
s = 114
L = 172
L = 172