Join thousands of students who trust us to help them ace their exams!
Multiple Choice
Use the elimination method to solve the following system of linear equations.
A
x=12,y=16
B
x=16,y=12
C
x=43,y=54
D
x=54,y=43
0 Comments
Verified step by step guidance
1
Write down the system of equations:
\$10x - 4y = 5$
\$5x - 4y = 1$
To use the elimination method, subtract the second equation from the first to eliminate \(y\) because both have the same coefficient \(-4y\):
\((10x - 4y) - (5x - 4y) = 5 - 1\)
Simplify the subtraction:
\$10x - 4y - 5x + 4y = 4$
This reduces to:
\$5x = 4$
Solve for \(x\) by dividing both sides by 5:
\(x = \frac{4}{5}\)
Substitute \(x = \frac{4}{5}\) back into one of the original equations (for example, \$5x - 4y = 1\() and solve for \)y$:
\(5 \left( \frac{4}{5} \right) - 4y = 1\)