• # question_answer 4) In an AP, if the common difference $(d)=-4$ and the seventh term $\left( {{a}_{7}} \right)$ is 4, then find the first term.

 Given, $d=-4$ ${{a}_{7}}=4$ $a+6d=4$ $a+6(-4)=4$ $a-24=4$ $a=4+24$ $a=28$