tolong jawab no 1-2 pakai jalannya

1. 5×(-2)+(-2)= -10-2=-12 (A)

2. pak andi= 15 hari
pak budi= 10 hari

1/t = 1/15+1/10
1/t = 2/30+ 3/30
1/t = 5/30
5t = 30
t = 6 hari (B)

semoga membantuu :)