14-07-2017
Mathematics

contestada

substitution 4x+6y=32. x=2y+16

Respuesta :

thunderboltbudot3767 thunderboltbudot3767

14-07-2017

4(2y+16)+6y=32
14y+16+=32
y=1.14
x=18.28

Answer Link

texaschic101 texaschic101

14-07-2017

4x + 6y = 32
x = 2y + 16

4(2y + 16) + 6y = 32
8y + 64 + 6y = 32
8y + 6y = 32 - 64
14y = - 32
y = -32/14...reduces to -16/7

x = 2y + 16
x = 2(-16/7) + 16
x = - 32/7 + 16
x = -32/7 + 112/7
x = 80/7

solution is (80/7 , -16/7)

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