Question

the sum of three consicutive term of an ap is 1.8
the first term is the five times the third term
find the comman difference​

Answer 1

Answer:

a +a+d+a+2d=1.8

3d+3a=1.8

d+a=0.6

Also, a= 5(a+2d) =5(0.6-d-2d)

0.6-d= 3-15d

14d=3-0.6= 2.4

d=2.4/14 = 1.2/7

Step-by-step explanation: