SOLUTION: How do you solve two problems at the same time and get a coordinationes
example 2c-d=-2 second problem is 4c+d=20
Algebra.Com
Question 182242: How do you solve two problems at the same time and get a coordinationes
example 2c-d=-2 second problem is 4c+d=20
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
2c-d=-2
4c+d=20
--------
This is called a system of equations.
You are asked to find a solution that
satisfies both equations.
---------
Add the two equation to solve for "c":
6c = 18
c = 3
----------------
Substitute into 2c - d = -2 to solve for "d":
2*3 - d = -2
d = 8
-------------------
Check the answer in both equations:
2c-d=-2
2*3 - 8 = -2
6 - 8 = -2
-2 = -2
--------------------
4c+d=20
4*3 + 8 = 20
12 + 8 = 20
20 = 20
====================
Both check out so the solution is c=3, d=8
============================================
Cheers,
Stan H.
RELATED QUESTIONS
My directions are: Solve the linear system. And i am given the two equations:
2c - d =... (answered by stanbon)
-4c minus 2d equals -2 (first equation)
2c minus 2d equals -14 (second equation)
how (answered by richwmiller,jsmallt9)
The average of two numbers a and b is C, and the product of a and b is D. What is then... (answered by ankor@dixie-net.com)
how do you solve systems with subtitute's
can please solve a few of these example... (answered by elima)
how do you do this problem?... (answered by jim_thompson5910)
How do you solve:
c-5d=2... (answered by richwmiller)
Hello E-Tutors:)
Could someone lead me in the right direction with this college... (answered by stanbon)
I have a value on absolute value equations! Why in some problems you get the same answer: (answered by checkley77)
Can you help me solve this system of equations for a,b,c and d:
2a-4b+6c-2d=-6... (answered by Edwin McCravy,ikleyn)