Asked by hs
Solve
2a + b = 3
4a - 5b = 20
My attempt
Multiply the first equation by 5
So,
10a + 5b = 15
4a - 5b = 20
Add them together
14a = 35
Divide both sides by 14
a = 2.5
Substitute (I have done it with the second one)
10 - 5b = 20
Take away 10 from both sides
5b = 10
Divide both sides by 5
b = 2
When I checked if the answers were right by fitting them back into the equation it didn't work
Please help
2a + b = 3
4a - 5b = 20
My attempt
Multiply the first equation by 5
So,
10a + 5b = 15
4a - 5b = 20
Add them together
14a = 35
Divide both sides by 14
a = 2.5
Substitute (I have done it with the second one)
10 - 5b = 20
Take away 10 from both sides
5b = 10
Divide both sides by 5
b = 2
When I checked if the answers were right by fitting them back into the equation it didn't work
Please help
Answers
Answered by
Damon
b = NEGATIVE TWO
scroll down to your first question for my solution
PLEASE POST ONCE
scroll down to your first question for my solution
PLEASE POST ONCE
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.