Question

Solve the simultaneous equations using elimination method.4x – 3y = 1x + 3y =​

Answer 1

Answer:

$x=\frac{1}{5}$

$y = -\frac{1}{15}$

Step-by-step explanation:

4x - 3y = 1

x + 3y = 0

Req To Solve With Elimination:

Make Them Equal:

-> 4x - 3y = 1

-> 4x + 4 . 3y = 0

Simplify:

->  4x - 3y = 1

-> 4x + 12y = 0

-> 4x - 4x - 3y - 12y = 1

-> -3y - 12y = 1

-> -15y = 1

-> $y = -\frac{1}{15}$

-> $x+3(-\frac{1}{15} )=0$

-> $x -\frac{1}{5}=0$

-> $x=\frac{1}{5}$

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Answer 2

Answer:

4x – 3y = 1

x + 3y =​

Adding the equations gives us:

5x =1

x = .2

since 4x - 3y = 1

then -3y -1 = -4x then we multiply by -1

3y +1 = 4x

3y = 4*.2 -1

3y = .8 -1

3y = -.2

y = -.2 / 3  = -0.066666666...

For a double check you can use Cramer's Rule

http://www.1728.org/cramer.htm

Step-by-step explanation: