Question

tell tye answer with proper solution ​

Answer 1

Answer:

4) 45

Step-by-step explanation:

a7 = a + 6d

Now,

a2 + a7 + a12 = a + d ) + ( a + 6d ) + ( a + 11d )

= 3a + 18d

= 3( a + 6d )

From 1st equation ,

= 3× 15

= 45