SOLUTION: What is the steps for this linear Systems of Equation below. Solve each system by substitution. 1. 5x-y= 1 -5x+y=-3 2. x+2y=-3 -3x+4y=-21 3. 2x+y=22 -8x

Question 930051: What is the steps for this linear Systems of Equation below.
Solve each system by substitution.
1. 5x-y= 1
-5x+y=-3

2. x+2y=-3
-3x+4y=-21
3. 2x+y=22
-8x+7y=0
4. -8x+4y=-20
x+y=10

Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
1. ....eq.1
....eq.2
________________
....eq.1 solve for
........substitute in eq.2
....eq.2

=> sins is not true, there are no solutions and the system is inconsistent and lines are parallel

2. ........eq.1
.......eq.2
___________________
........eq.1 solve for
......substitute in eq.2
.......eq.2 and solve for

go to substitute for and solve for

intersection point is: (,)

3. ....eq.1
....eq.2
___________________
....eq.1 solve for
...............substitute in eq.2
....eq.2....... solve for

go to substitute for and solve for

intersection point is: (,)

4. ..........eq.1
.............eq.2
__________________________________
......eq.2 solve for
....substitute in eq.1

..........eq.1...solve for

go to plug in value for

intersection point is: (,)

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