Answer:
12 and 15
Step-by-step explanation:
Let the numbers be called x and y. We know from the first sentence that:
x + y = 27.
From the second sentence we know that x + 3 = y. (In this problem it does not matter which is x and which is y.)
Substituting in x + 3 into the first equation, we have
x + x + 3 = 27
2x + 3 = 27
2x + 3 - 3 = 27 - 3
2x = 24
x = 12
y = x+ 3 = 15
Check: does x + y = 27? Yes, 12 + 15 = 27
