0
x + 2y = 4 (A)
y = 2x + 7 (B)
2*(B) gives: 2y = 4x + 14
Substitute the right hand side for 2y in (A) to give: x + (4x + 14) = 4
Simplify: 5x + 14 = 4
Subtract 14 from both sides: 5x = -10
Divide both sides by 5: x = -2
Substitute for x in (B): y = 2*(-2) + 7 = -4 + 7 = 3
Solution: (x, y) = (-2, 3)
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
How do you solve 2x plus y equals 0 and 4x plus 2y equals 0?
many solutions
Solve by the method of elimination 2x plus 3y equals 40 3x plus 2y equals 20?
y=16 x= -4
Solve for y when 2x equals 2y plus 3?
2x = 2y + 3 So 2y = 2x - 3 and y = x - 1.5 It is not possible to solve a single linear equation in two variables, other than to express one variable in terms of the other.
How do you solve 2x plus 2y equals 6?
A single linear equation in two variables cannot be solved.
How do you solve 2x plus 2y equals 4 and 4x plus y equals 1?
2x + 2y = 44x + y = 1There are many methods you can use to solve this system of equations (graphing, elimination, substitution, matrices)...but no matter what method you use, you should get x = -1/3 and y = 7/3.
How do you solve 2y equals 4x plus 4?
2y = 4x + 4y = 2x + 2
How do you solve 2x plus y equals 0 and 4x plus 2y equals 0?
many solutions
How do you solve 2x-2y equals 1?
get it to y= -2y = 1 - 2x y = x - 0.5
Find the slope of the line of 2x plus 2y equals 7?
The slope of the line of 2x plus 2y equals 7 is (7/2x - 1).
Solve by the method of elimination 2x plus 3y equals 40 3x plus 2y equals 20?
y=16 x= -4
How do you write 2x plus 2y equals 8 in function form?
Solve for y: 2x+2y=8 2y=-2x+8 y=-x+4 f(x)=-x+4 I think that's what you mean.
Solve for y when 2x equals 2y plus 3?
2x = 2y + 3 So 2y = 2x - 3 and y = x - 1.5 It is not possible to solve a single linear equation in two variables, other than to express one variable in terms of the other.
How do you solve 2x plus 2y equals 6?
A single linear equation in two variables cannot be solved.
Solve for y if the equation is -2x - 2y equals -12?
-2x - 2y = -122x + 2y = 122y = 12 - 2xy = 6 - x
Can you tell me how to graph -2x equals 2y plus 5?
-2x=2y+5 +2x -2y -2y=2x+5 /-2 y=-1/1+2.5
How do you solve 2x plus 2y equals 4 and 4x plus y equals 1?
2x + 2y = 44x + y = 1There are many methods you can use to solve this system of equations (graphing, elimination, substitution, matrices)...but no matter what method you use, you should get x = -1/3 and y = 7/3.
What is x plus 2y-2x-y equals .?
X + ( 2Y - 2X - Y ) is equal to Y - X
