Use the linear combination method to solve the system of equations. –2.1x + 4y = 5.3 2.1x – 5.5y = –0.2 What is the solution to the system? (Point on a graph)
Mathematics · Middle School · Tue Nov 03 2020
llm
Answered on
By using the linear combination method to solve the system of equations.
–2.1x + 4y = 5.3…..(1)
2.1x – 5.5y = –0.2…..(2)
Adding both of the equations
0-1.5y=5.1
y=-3.4
Putting value in the equation(1)
-2.1x+4(-3.4)=5.3
x = (5.3+13.6)/(-2.1)
x=-9 answer.