Question

HELP PLEASE ON MATH!!

Answer 1

`(3b^2)/(4a^2)+(5b)/(3a)-(1)/(6a^3)=(3b^2\cdot3a)/(4a^2\cdot3a)+(5b\cdot4a^2)/(3a\cdot4a^2)-(1\cdot2)/(6a^3\cdot2)\\\\=(9ab^2)/(12a^3)+(20a^2b)/(12a^3)-(2)/(12a^3)=\boxed{(20a^2b-2+9ab^2)/(12a^3)}`