Asked by John
Can someone help me combine opposing equations? Ex: 5x+7 and 6x+21 make 11x+28. But only, what if the equations had a negative and a positive. Ex: 4x+5 and 6x-10. How would I combine them?
Answers
Answered by
Reiny
"combine opposing equations" is not a mathematical operation.
You simplified 5x+7 + 6x+21 to get 11x+28
Had it been:
4x+5 + 6x-10 , notice I needed those brackets or else only the 6x would have been subtracted
= 4x + 6x + 5 - 10
= 10x - 5
had it been:
4x+5 - (6x-10) , notice I needed those brackets or else only the 6x would have been subtracted
= 4x + 5 - 6x + 10
= 4x - 6x + 5 + 10
= -2x + 15
remember you can only add <b>like</b> terms
e.g. 5 apples plus 9 apples = 14 apples
but 5 apples plus 9 pears is just that
If you can add and subtract integers, then you can do these questions
You simplified 5x+7 + 6x+21 to get 11x+28
Had it been:
4x+5 + 6x-10 , notice I needed those brackets or else only the 6x would have been subtracted
= 4x + 6x + 5 - 10
= 10x - 5
had it been:
4x+5 - (6x-10) , notice I needed those brackets or else only the 6x would have been subtracted
= 4x + 5 - 6x + 10
= 4x - 6x + 5 + 10
= -2x + 15
remember you can only add <b>like</b> terms
e.g. 5 apples plus 9 apples = 14 apples
but 5 apples plus 9 pears is just that
If you can add and subtract integers, then you can do these questions
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.