Question

Помогите пж
...............

Answer 1

1) a5= a1+4d= -3+4*4= -3+16= 13

2) d= -4-3= -7

a5= a1+4d= 3-4*7= 3-28= -25

3) d= 12-10= 2

a12= a1+11d= 10+11*2= 10+22= 32