SALE
2 answers:
You might be interested in
Answer:
see explanation
Step-by-step explanation:
tan x = -1
x = -45
tan x = 5
x = 78.69
First Let we solve the Original system of equations:
equation (1):
equation (2):
Multiplying equation (1) by 7, we get
Subtracting,
implies
Then
Thus the solution of the original equation is
Now Let we form the new equation:
Equation 2 is kept unchanged:
Equation (2):
Equation 1 is replaced with the sum of equation 1 and a multiple of equation 2:
Equation (1):
Now solve this two equations:
Multiply (1) by 7 and (2) by 8,
Subtracting, implies
Then x=2.
so the solution for the new system of equation is x=2, y=1.
This Show that the solution to the system of equations 8x − 5y = 11 and 7x − 8y = 6 is the same as the solution to the given system of equations