Question

Write the first four terms of the A.P when its first term is -5 and common difference -7

Answer 1

a, a+d,a+2d,a+3d are in Ap
a=-5,d=-7
a+d = -5-7= -12
a+2d = -5+2(-7)
=-5-14=-19
a+3d
-5+3(-7)
-5-21
=-26
terms are -5,-12,-19,-26