Question

a+b=-$\frac{2}{3}$
c=-$\frac{3}{5}$
ac+bc=...

Answer 1

a+b=2/3
c=3/5
ac+bc=c(a+b)=3/5 x2/3=2/5

Answer 2

c· (a + b)= $\frac{3}{5}$·$\frac{2}{3}$= $\frac{2 * 3}{3 * 5}$= $\frac{6}{15}$