Problemas
7x-3y=4 2x-4y=1 The solution to the system of equations is __ (3/22,-7/22) (13/22,1/22) (13/34,-15/34)
Roztwór
Caridad
professionell · Tutor durante 6 años
4.1
(242 Votos)
Respuesta
To solve the system of equations, we can use the method of substitution or elimination. Let's use the elimination method.First, we can multiply the second equation by 2 to make the coefficients of x in both equations equal:
Now we have the system of equations:
Next, we can multiply the first equation by 4 and the second equation by 7 to make the coefficients of x in both equations equal:
Now we can subtract the second equation from the first equation to eliminate x:
Simplifying, we get:
Dividing both sides by 44, we get:
Now that we have the value of y, we can substitute it back into one of the original equations to solve for x. Let's use the first equation:
Substituting
, we get:
Simplifying, we get:
Adding
to both sides, we get:
Combining the terms on the right side, we get:
Dividing both sides by 7, we get:
Therefore, the solution to the system of equations is
.So the correct answer is
.