algebra
posted by Anonymous .
I have to simplify this please help how to solve the problem involving rational algebraic expressions
3 over a+2a over 3a=11 over 15

If your expression mean :
3 / a + 2 a / 3 a = 11 / 15
Then :
3 / a + 2 a / 3 a = 11 / 15
you can write like :
3 / a + 2 / 3 = 11 / 15
3 / a + 10 / 15 = 11 / 15
_____________________________
( Becouse 2 / 3 = 10 / 15 )
_____________________________
Subtract 10 / 15 to both sides
3 / a + 10 / 15  10 / 15 = 11 / 15  10 / 15
3 / a = 1 / 15 Multiply both sides by a
3 a / a = 1 * a / 15
3 = a / 15 Multiply both sides by 15
3 * 15 = 15 a / 15
45 = a
a = 45