Which ordered pair is the solution to the following system of equations? −3x + y= −31 4x + 5y =16

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asked Mar 27, 2018 40.2k views

1 Answer

Sascha Willems · Answer 1 · 2018-04-01T12:40:57+0000

−3x + y= −31
4x + 5y =16

multiply 1st equaltion by (-5)
15x - 5y = 155
4x + 5y = 16
-----------------------add
19x = 171
x = 171/19
x = 9

−3x + y= −31
−3(9) + y = −31
-27 + y = -31
y = -31 + 27
y = -4

answer
ordered pair (9, -4)

Which ordered pair is the solution to the following system of equations? −3x + y= −31 4x + 5y =16

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