SOLUTION: One number is 3 more than the other. Their sum is 7. Find the numbers.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: One number is 3 more than the other. Their sum is 7. Find the numbers.      Log On


   



Question 831722: One number is 3 more than the other.
Their sum is 7.
Find the numbers.

Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
---
x = y + 3
x + y = 7
---
put the system of linear equations into standard form:
---
x - y = 3
x + y = 7
---
copy and paste the above linear system in standard form into this matrix-method solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
solution:
x = 5
y = 2
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php