A + B = 39
A - B = 11
-------------- Add them together
2A + 0B = 50
Therefore A = 25
25 - B = 11
Therefore B - 14
... so replace letters with the values we now have and check that the equations are correct.
25 + 14 = 39..... correct
25 - 14 = 11...... correct
12
- 1 and 5.
8 & 12
12 and 24!
0.4 and 2.
3.5 and -1.5
The difference of two numbers is 8. Their sum is 22. What are the two numbers?
4
212
27 and 81
10 and 15.
the sum of two whole numbers are 77 .their difference is 48.what are the two numbers