SOLUTION: elimination method a+6b=1 a+2b=-3

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Question 631279: elimination method
a+6b=1
a+2b=-3
Found 2 solutions by mananth, MathTherapy:
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
1 a + 6 b = 1 .............1

1 a + 2 b = -3 .............2
Eliminate y
multiply (1)by 1
Multiply (2) by -3
1 a 6 b = 1
-3 a -6 b = 9
Add the two equations
-2 a = 10
/ -2
a = -5
plug value of x in (1)
1 a + 6 b = 1
-5 + 6 b = 1
6 b = 1 + 5
6 b = 6
b = 1
a=-5,b=1

Answer by MathTherapy(10551) About Me  (Show Source):
You can put this solution on YOUR website!

elimination method
a+6b=1
a+2b=-3

a + 6b = 1 ------ eq (i)
a + 2b = - 3 ---- eq (ii)
4b = 4 ------ Subtracting eq (ii) from eq (i)

b = 4%2F4, or highlight_green%281%29

a + 6(1) = 1 ------ Substituting 1 for b in eq (i)

a = 1 - 6, or highlight_green%28-+5%29

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