mrspressley2011 mrspressley2011

20-11-2021
Mathematics

contestada

Solve the system of equations by substitution.
X+5y=-11
-7x-9y=-1

Respuesta :

pauli1991 pauli1991

20-11-2021

Step-by-step explanation:

rearange one of the equations:

x = -11 - 5y

substitute x in the second equation

-7 (-11-5y) - 9y = -1

solve for y

once you know the value of y, substitute again to solve for x

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