SOLUTION: Solve x+2y=3 and 5x+4y=8 by method of substitution. Show your work too
Algebra.Com
Question 847854: Solve x+2y=3 and 5x+4y=8 by method of substitution. Show your work too
Answer by mxgirl22(39) (Show Source): You can put this solution on YOUR website!
Solve by method of substitution. Show your work.
--------------------------------------------------------------------------------
Step 1.) I like to label each equation, so I'm going to do that now.
Equation 1.)
Equation 2.)
--------------------------------------------------------------------------------
Step 2.) I can see that Equation #1 is going to be easier to manipulate.
Equation 1.)
**Get "x" by itself in Equation #1.
Equation 1.)
<------ I'm calling this Equation #3.
--------------------------------------------------------------------------------
Step 3.) Using Equation #3, plug in to Equation #2.
**Note:
Equation 2.)
Equation 3.)
<------ I'm calling this Equation #4.
--------------------------------------------------------------------------------
Step 4.) Solve for "y", using equation #4.
--------------------------------------------------------------------------------
Step 5.) Using the value we got for "y" in step 4, plug in to either Equation #1 or Equation #2.
Equation 1.)
--------------------------------------------------------------------------------
Step 6.) Check using and .
Equation 2.)
Checks!
--------------------------------------------------------------------------------
Step 7.) Answer.
RELATED QUESTIONS
Method of Substitution
4. Solve by substitution. Check your answers.
a) x+2y=3... (answered by solver91311)
Solve by using the substitution method and show your work
-9x + 6y =3
18x + 30y =... (answered by Fombitz)
Solve this system using the substitution method. -2x - y = -7 x + 7y = 10 Solve using... (answered by MathLover1)
2x+y=-2 and 5x+3y=-8 solved by using substitution method
Show... (answered by lwsshak3,stanbon)
Solve each system by substitution. Show your work.
1) a= 3b+1
5a-3b= 13
2) 4y=... (answered by Edwin McCravy)
Solve by using the Substitution Method.
5x + 4y = 16.
x = 14... (answered by richwmiller)
Solve the system using the substitution method. Show all your steps.
1. x+2y=6... (answered by checkley79)
Solve and CHECK the system of equations by either substitution or addition method.... (answered by Alan3354,Boreal)
Solve the system by the linear combination method, show all work carefully, show your... (answered by ewatrrr)