Asked by Anonymous
How would u solve these systems?
1. 2a-b=1
a+3b=4
2. Y-x=2
2x+y=8
1. 2a-b=1
a+3b=4
2. Y-x=2
2x+y=8
Answers
Answered by
Damon
2 a - 1 b = 1
2 a + 6 b = 8 (multiplied eqn 2 by 2)
-------------- subtract
-7 b = -7
b = 1
then a = 1
=================================
-1 x + 1 y = 2
+2 x + 1 y = 8
------------------subtract
-3 x = -6
x = 2
then y = 4
2 a + 6 b = 8 (multiplied eqn 2 by 2)
-------------- subtract
-7 b = -7
b = 1
then a = 1
=================================
-1 x + 1 y = 2
+2 x + 1 y = 8
------------------subtract
-3 x = -6
x = 2
then y = 4
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.