Final answer:
To solve the system of linear equations, use the method of substitution to find the values of x and y. The solution is x = 359/9 and y = -11/3.
Step-by-step explanation:
To solve the system of linear equations, we can use the method of substitution. First, rearrange the equations in the standard form Ax + By = C. The given system becomes:
3x + 13y = 9
3x + 4y = 42
Next, subtract the second equation from the first equation to eliminate x:
(3x + 13y) - (3x + 4y) = 9 - 42
9y = -33
Solve for y:
y = -33/9 = -11/3
Substitute the value y = -11/3 into either of the original equations to solve for x:
3x + 13(-11/3) = 9
3x - 143/3 = 9
3x = 9 + 143/3
3x = 27 + 143/3 = 216/3 + 143/3 = 359/3
x = 359/3 * 1/3 = 359/9
Therefore, the solution to the system of linear equations is x = 359/9 and y = -11/3.
Learn more about Solving systems of linear equations