Question

solve the equation
a+2d =12
a+6d =24​

Answer 1

as,,

a+2d=12

2d=12-a

d=12-a/2--(1)

now,

a+6d=24

according to (1)eqution putting the value of d =(12-a)/2

a+6(12-a)/2=24

a+72/2-6a/2=24

a+36-3a=24

-2a=24-36

a=-12/-2

a=6--(2)

now putting the value of a in (1) equation

d=12-(6)

d=6

so a= 6and b=6

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Answer 2

Hey sis...

Answer:

By Subtracting eq.1 frm eq.2,

-4d = -12

d = 3

Hence, the value of d is 3.