Question

in an AP if a10=20 and d= 4 find first term​

Answer 1

Answer:

there is some mistake in question

a10=20 what does it's mean

Step-by-step explanation:

Answer 2

a₁₀=20

d=4

aₙ=a+(n-1)d.... (where a is first term)

a₁₀=a+(10-1)4

20=a+(9)(4)

a=20-36

a=-16