find 2 numbers to fit all these rules:
to the nearest 10 and 100 ,both round to the same number.
2 the estimated sum is 200
3 the estimated difference is 0.
Eq1: X + Y = 200,
Eq2: X - Y = 0,
Add the 2 Eqs:
2X = 200,
X = 200 / 2 = 100.
Substitute 100 f0r x in Eq1:
100 + Y = 200,
Y = 200 - 100,
Y = 100.
The 2 numbers are 100 each.