what is 1.25s+1.75=323 and 1.25s+1.75a=478.75 solved
i need to solve for a and s
1.25s + 1.75 = 323
1.25s + 1.75a = 478.75
If both equation were equal to zero, we could set them equal to
each other and solve for a.
1.25s + 1.75 - 323 = 323 - 323 = 0
1.25s + 1.75a - 478.75 = 478.5 - 478.5 = 0
Now, we have two equations equal to zero, therefore, equal to each other.
1.25s + 1.75a - 478.75 = 1.25s + 1.75 - 323
1.25s + 1.75a - 478.75 = 1.25s - 321.25
1.25s + 1.75a - 478.75 - 1.25s = 1.25s - 321.25 - 1.25s
1.75a - 478.75 = -321.25
1.75a - 478.75 + 478.75 = -321.25 + 478.75
1.75a = -321.25 + 478.75
1.75a = 157.5
1.75a / 1.75 = 157.5 / 1.75
a = 90
Use that to solve for s.
1.25s + 1.75a = 478.75
1.25s + 1.75(90) = 478.75
1.25s + 157.5 = 478.75
1.25s + 157.5 - 157.5 = 478.75 - 157.5
1.25s = 321.25
1.25s / 1.25 = 321.25 / 1.25
s = 257
Check it.
1.25s + 1.75a = 478.75
1.25(257) + 1.75(90) = 478.75
321.25 + 157.5 = 478.75
Done. a = 90 and s = 257