# Math

- 3a-7b/2a plus 5a-4b/3a plus 3.

1. -(3a-7b)/(2a) + (5a-4b)/(3a) + 3

The common denominator is (2a)(3a), so we have for the numerator

-(3a-7b)(3a) + (5a-4b)(2a) + 3(2a)(3a)
= 19a^2+13ab

so, our final fraction is

(19a^2+13ab)/6a^2 = (19a+13b)/(6a)

posted by Steve

## Similar Questions

1. ### Math 222

How do I write this problem as a single fraction? Sorry my addition button doesn't work. 2x plus 7y 2x plus 5y ____________ - ____________ plus 2 8x 2x
2. ### Math 222

How do I write this problem as a single fraction? Sorry my addition button doesn't work. 2x plus 7y 2x plus 5y ____________ - ____________ plus 2 8x 2x

4. ### Calculus

Find derivative: (write answer as single fraction) y=ln((4x-1)/x^3) So far I have: y'=(4/(4x-1))-3/x How do I write as single fraction let u= (4x-1) v= x^-3 dy/dx= d y/d(uv) * d(uv)/dx dy/duv= 1/uv d(uv)/dx= udv/dx + v du/dx put
5. ### Calculus

Find derivative: (write answer as single fraction) y=ln((4x-1)/x^3) So far I have: y'=(4/(4x-1))-3/x How do I write as single fraction duplicate.

"Express the mixed# as the addition of a whole # and fraction.Then find the value as a single fraction." *i don't understand what it is asking me?!