Question

solve the system by the substitution method
x-7y=8
2x-14y=11

Answer 1

x = 8+7y
2(8+7y)-14y = 11
16+14y-14y = 11
........
i think u maybe made a typo?

Answer 2

x-7y=8
Rearranging above we get x = 8 + 7y

Substituting this value of x in second equation

2(8 + 7y) -14y=11
16 +14y - 14y = 11
This gives 16 = 11 which is wrong
Therefore the two given equations do not have a solution.

Answer 3

In case the answer key gives an answer, then u might hv typed the question wrong

Answer 4

x-7y=8
2x-14y=11

2x-14y=16
2x-14y=11

which are parallel lines with different constant so they never meet

Answer 5

thanks amistre!!