Posted by Diana on Thursday, June 7, 2007 at 12:21am.
solve each of the following systems by substitution.
16) 5x -2y = -5
y - 5x = 3
20) 8x -4y = 16
y = 2x - 4
28) 4x -12y = 5
-x + 3y = -1
Step one: Solve on of the equations for one of the variables.
Step two:Substitute the expression for the variable found in step one into the other equation.
Step three:Solve the equation from step two to find the value of one variable.
Use the distributive property
Step four:Substitute the value found in step three in any equation containing both variables to find the value of the other variable.
step five: check the proposed solution in the orginal system.
The equation is equal, so it is correct.
3y=-x or -3y=x
y=5 +60 +60
260/4 - 60=5
65 - 60 = 5
5 = 5
I hope I helped
Answer this Question
algebra - Solve the following systems by substitution. 4x-12y=5 -x+3y=-1
math,algebra - Can someone help me with this problem I don't understand what to ...
algebra - solve the following systems of equations , x+2y=9,x=5-2y
math - Solve the following systems of equations. 3x + 4y = 4 2x + y = 6
algebra - I do not know how to solve the following systems of linear equations ...
Math 116 algebra please check - Solve the following systems of equations x + 6y...
algebra - Solve each of the following systems by using either addition or ...
Algebra II - Right now we're doing systems of Linear Equations in Three ...
Algebra - College intro - I'm having trouble learning "Solving systems of ...
Algebra 2 - Solve the following systems of equations graphically. Please state ...