sophiaaaa3
sophiaaaa3 sophiaaaa3
  • 24-01-2020
  • Mathematics
contestada

look at the picture and can you explain to me how to solve the equation and using the substitution method

look at the picture and can you explain to me how to solve the equation and using the substitution method class=

Respuesta :

jimohfawwazajibola25
jimohfawwazajibola25 jimohfawwazajibola25
  • 24-01-2020

Answer:

x = 4   y = 0

Step-by-step explanation:

3x - y = 12 -------------(i)

2x + 5y = 8--------------(ii)

from (i)

y = 3x - 12----------------(iii)

put (iii) in (ii)

2x + 5(3x -  12) = 8

2x + 15x - 60 = 8

17x = 68

x = 4

sub. for x in (iii)

y = 3(4) -12

y = 0

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