So my brother has to solve this equation:
3 - 1+2a
.....-------
........a
Here are offered answers:
A) a-1/a
B) a+1/a
C) 5a-1/a
D) 5a+1/a
He got the right answer as C, but the solutions say the correct answer is under A.
I need someone to show me the right answer and how he got it.
3 - 1+2a
.....-------
........a
Here are offered answers:
A) a-1/a
B) a+1/a
C) 5a-1/a
D) 5a+1/a
He got the right answer as C, but the solutions say the correct answer is under A.
I need someone to show me the right answer and how he got it.
-
3 - (1 + 2a)/a
= 3a/a - (1 + 2a)/a
= [3a - (1 + 2a)] / a
= (3a - 1 - 2a )/a
= (a - 1)/a
--> Answer A
= 3a/a - (1 + 2a)/a
= [3a - (1 + 2a)] / a
= (3a - 1 - 2a )/a
= (a - 1)/a
--> Answer A