2x+3y=-27 is one equation in a coincidental system of two linear equations. the other equation is __y=__x-102.

Given:

An equation in a coincidental system of two linear equations:

2x + 3y = -27

The other equation is 

_y = _x - 102

Rearrange the second equation to be identical to the first

_y - _x = -102

Determine the factor, -102/-27 = 3.78

for x, 2 * 3.78 = 7.56
for y, 3 * 3.78 = 11.33

The second equation, 11.33y - 7.56x = -102