contestada

The second of two numbers is 4 more than the first. The sum of the numbers is 56. Find the numbers.

Respuesta :

let first number is x
second number is 4 more than the first= x + 4
x + x + 4 = 56
2x + 4 = 56
2x = 52
  x = 26
  26 + 4 = 30

answer
the numbers are 26 and 30
ANSWER:
the bigger number is 30
the smaller number is 26
WORK:
Okay, so to solve this set up two equations.

let's use y and x  as these numbers.


x + 4 
= y (because a number, y, is 4 more than the first, x.)
+ y = 56 (becasue the sum of the numbers is 56).

now, solve for x by placing the first inequality into the second.
+ (x + 4) = 56 combine like terms
2x + 4 = 56 subract 4 from both sides to isolate x
2x  = 52   divide to isolate x
= 26

So the smaller number has a value of 26. Remeber that the sum of the numbers is 56, so to find y, subtract the value of x from 56.


56 - 26 
 =  30

so the bigger number has a value of 30.
 
We know that the answer is right because the numbers add up to 56, and the value of y, 30 is 4 more than the value of x 26.

Hope this helps and have a great day!