To solve this system of equations, we can use the method of substitution.
From the first equation:
7X + 3Y = -25
=> Y = (-25 - 7X)/3
Substitute this into the second equation:
-7X + 9((-25 - 7X)/3) = -47
-7X + (-75 - 21X) = -47
-28X = 28
X = -1
Substitute X = -1 back into the first equation:
7(-1) + 3Y = -25
-7 + 3Y = -25
3Y = -18
Y = -6
Therefore, the solution to the system of equations is X = -1 and Y = -6.
Solve the system of equations
7X plus 3Y equals -25
Negative 7X plus 9Y equals -47
1 answer