Question

Question Progress

Answer 1

• a_5=43
• a_3=39

common difference=d=43-39=4

We need first term a

$\\ \sf{:}\dashrightarrow a_5=43$

$\\ \sf{:}\dashrightarrow a+4d=43$

$\\ \sf{:}\dashrightarrow a+4(4)=43$

$\\ \sf{:}\dashrightarrow a+16=43$

$\\ \sf{:}\dashrightarrow a=27$