SOLUTION: Using the Substitution method, how would you solve x-y=12 and x+y=20?
Algebra.Com
Question 941291: Using the Substitution method, how would you solve x-y=12 and x+y=20?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x-y=12
x+y=20
---
put the system of linear equations into standard form
---
x-y=12
x+y=20
---
copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
solution:
x = 16
y = 4
---
now by substitution:
---
y = 20 - x
x - y = 12
x - (20 - x) = 12
x - 20 + x = 12
2x = 12 + 20
x = (12 + 20)/2
x = 16
y = 20 - 16
y = 4
---
solution by substitution:
x = 16
y = 4
---
Free algebra tutoring live chat:
https://sooeet.com/chat.php?gn=algebra
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations with 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
---
RELATED QUESTIONS
How would you solve y=-2x+3 and x+y=4? Using the Substitution... (answered by TimothyLamb)
Solve using the substitution method:
x-y=5
x+2y=7
and please explain...thank... (answered by jim_thompson5910)
How would you solve this equation, by either using the substitution method or the... (answered by jim_thompson5910)
solve for X and Y using substitution method
2x=y+1
x+y=-1
thank you (answered by solve_for_x)
{(y=4x-7)(y=9x-8)
how would you find the answer to this using the substitution method
(answered by MathLover1)
how can i solve this equation using substitution method?
x+y=12... (answered by Fombitz)
solve this equation using the substitution method
x+y=20... (answered by sofiyac)
Can you please help me solve using the substitution method?
x + y = 1
x + y =... (answered by checkley71)
How do you solve 5x-y=-15 and x+y=-3 using the substitution method? The end result should (answered by mando271,stanbon)