Respuesta:
Explicación paso a paso:
1)
3x+5y= 7
2x-y= -4 .... x5
------------
10x-5y= -20
---------------
13x= -13
x= -1
2)
7x-4y= 5 .... x2
9x+8y= 13
14x-8y= 10
23x=23
x= 1
3)
9x + 16y = 7
-3x + 4y = 0 .... -(x4)
12x - 16y = 0
21x = 7
x = 7/21
x=1/3
dame corona plis
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Respuesta:
Explicación paso a paso:
1)
3x+5y= 7
2x-y= -4 .... x5
------------
3x+5y= 7
10x-5y= -20
---------------
13x= -13
x= -1
2)
7x-4y= 5 .... x2
9x+8y= 13
---------------
14x-8y= 10
9x+8y= 13
---------------
23x=23
x= 1
3)
9x + 16y = 7
-3x + 4y = 0 .... -(x4)
---------------
9x + 16y = 7
12x - 16y = 0
---------------
21x = 7
x = 7/21
x=1/3
dame corona plis