SOLUTION: solve the system of 2 equations and 2 unknown using the echelon method.
3x/8-3y/5=33/80
4x+4y=23/35
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Question 892453: solve the system of 2 equations and 2 unknown using the echelon method.
3x/8-3y/5=33/80
4x+4y=23/35
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
3/8,-3/5,33/80
4,4,23/35
divide row 1 by 3/8
1,-24/15,264/240
4,4,23/35
add down (-4/1) *row 1 to row 2
1,-8/5,11/10
0,52/5,-1310/350
divide row 2 by 52/5
1,-8/5,11/10
0,1,-655/1820
We now have the value for the last variable.
We will work our way up and get the other solutions.
add up (8/5) *row 2 to row 1
1,0,9540/18200
0,1,-131/364
final
1,0,477/910
0,1,-131/364
1,0,477/910 = 0.52417582
0,1,-131/364 = -0.35989011
"477/910","-131/364"
(477/910,-131/364)
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