Answer:
The second number is 28.
Step-by-step explanation:
Let x as the first number and
y as the second number
x + y = 63 -> 1st equation
y = x - 7 -> 2nd equation
Substitute the 2nd equation to 1st equation
x + y = 63
x + ( x - 7 ) = 63
x + x - 7 = 63
2x = 63 + 7
2x = 70
x = 35
y = x - 7
y = 35 - 7 = 28
The 1st number is 35 and the 2nd number is 28.
