Answer:
The two numbers are 23 and 56
Explanation:
Let's say the two numbers are A and B.
We are told:
1) A+B=79
2) 3A+5B=283
Let's take the first expression and solve for A:
A+B=79
A=79-B
Now use this value of A in the second expression:
3A+5B=283
3(79-B)+5B=283
237-3B+5B=283
2B = 46
B = 23
Since B=23, we know from 1) that
A+B=79
A+23=79
A = 56
CHECK:
Does A+B=79?
56+23 = 79? YES
Does 3A+5B=283?
3(56)+5(23)=283
168 + 115 = 283? YES