Question

solve 5x+7y=3, 4x+14y=-6..

Answer 1

Answer:

System of Linear Equations entered :

[1] 5x + 7y = 10

[2] 3x - 14y = 6

Graphic Representation of the Equations :

7y + 5x = 10 -14y + 3x = 6

Solve by Substitution :

// Solve equation [2] for the variable x

[2] 3x = 14y + 6

[2] x = 14y/3 + 2

// Plug this in for variable x in equation [1]

[1] 5•(14y/3+2) + 7y = 10

[1] 91y/3 = 0

[1] 91y = 0

// Solve equation [1] for the variable y

[1] 91y = 0

[1] y = 0

// By now we know this much :

x = 14y/3+2

y = 0

// Use the y value to solve for x

x = (14/3)(-0/10525960)+2 = 2

Solution :

{x,y} = {2,0/10525960}

Answer 2

Answer:

by elimination method

Step-by-step explanation:

5x+7y=3 [1]

4x+14y=-6 [2]

multiply by 2 in [1] and by 1 in [2]

10x+14y=6 [3]

4x+14y=-6 [4]

subtracting [3] and [4]

x=2

put x=2 in [1]

hence , y=-1