Equations are: 4x + 2y = 6
x - y = 3
Multiply 2nd equation by 2,
2x - 2y = 6
Add both the equations,
6x = 12
x = 12/6
x = 2
In short, Your Answer would be 2
Hope this helps!
Answer:
y=7, x=5
Step-by-step explanation: hope this helps
Answer:
x = 31/35
, y = 8/5
Step-by-step explanation:
Solve the following system:
{7 x - 2 y = 3
14 x + y = 14
Hint: | Choose an equation and a variable to solve for.
In the second equation, look to solve for y:
{7 x - 2 y = 3
14 x + y = 14
Hint: | Solve for y.
Subtract 14 x from both sides:
{7 x - 2 y = 3
y = 14 - 14 x
Hint: | Perform a substitution.
Substitute y = 14 - 14 x into the first equation:
{7 x - 2 (14 - 14 x) = 3
y = 14 - 14 x
Hint: | Expand the left hand side of the equation 7 x - 2 (14 - 14 x) = 3.
7 x - 2 (14 - 14 x) = (28 x - 28) + 7 x = 35 x - 28:
{35 x - 28 = 3
y = 14 - 14 x
Hint: | Choose an equation and a variable to solve for.
In the first equation, look to solve for x:
{35 x - 28 = 3
y = 14 - 14 x
Hint: | Isolate terms with x to the left hand side.
Add 28 to both sides:
{35 x = 31
y = 14 - 14 x
Hint: | Solve for x.
Divide both sides by 35:
{x = 31/35
y = 14 - 14 x
Hint: | Perform a back substitution.
Substitute x = 31/35 into the second equation:
Answer: {x = 31/35
, y = 8/5
Answer:
1300 middle school students.
Step-by-step explanation:
We can turn the words into this expression:
2000 x 65/100
And that expression simplifies to 1300, so 1300 students.
Hey there!
Here's you your answer: D; 12.56
How i got it: *image attached*
Hope this helps!
