SOLUTION: Solve each set of equations by substitution or elimination:
a) 2x-3y=18
2x+2y=28
b) 5x-2y=15
3x-2y=-21
Algebra.Com
Question 1030029: Solve each set of equations by substitution or elimination:
a) 2x-3y=18
2x+2y=28
b) 5x-2y=15
3x-2y=-21
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Solve each set of equations by substitution or elimination:
a)
2x-3y=18
2x+2y=28
-------
Subtract and solve for "y"::
5y = 10
y = 2
---
solve for "x":
x + y = 14
x = 14-2 = 12
----------------------
b)
5x-2y=15
3x-2y=-21
-------
Subtract and solve for "x"::
2x = 36
x = 18
---
Solve for "y":
2y = 5x-15
2y = 90-15
2y = 75
y = 37.5
-----------
Cheers,
Stan H.
RELATED QUESTIONS
Use substitution or elimination to solve each system of equations.
2x + 5y= 16
5x -... (answered by mananth)
6.1
I. Solve each system by graphing, and classify the system as dependent or... (answered by Flake)
1. Solve by substitution or elimination method:
3x – 2y = 26
(answered by RAY100)
1. Solve by substitution or elimination method:
3x – 2y = 26
(answered by RAY100)
Solve by elimination:
2x+3y=21
5x-2y=-14 (answered by funmath)
Solve by elimination
2x + 3y = 21
5x - 2y =... (answered by praseena)
4) Solve the system of equations using the substitution method
5x + 2y = 4 and 3x + y (answered by stanbon)
Solve by substitution or elimination:
5x+2y+10z=5
3x-y+5z=-6... (answered by Edwin McCravy)
Use substitution or elimination to solve each system of equations. Please explain.... (answered by jim_thompson5910)