Question

2a + 9d = 42. equation (1) ; a +62d = 171. equation (2) ; solve equation 1 and 2 and find d also find AP​

Answer 1

Answer:

a=213/23

d=60/23

AP :  213/23,  273/23,  333/23............................................

Step-by-step explanation:

2a + 9d = 42----------------(1)

a +62d = 171.

Multiply by 2

2a+124d=342---------------(2)

subtract (1) from(2)

115d=300

d=300/115=60/23

a+62d=171

a+62*60/23=171

23a+3720=3933

23a=3933-3720=213

a=213/23

So AP is:

213/23,  273/23,  333/23............................................