Question

Sabendo que (2x + 4), (3x - 2) e 17x + 6) formam, nessa ordem, uma PA, calcular o valor de xe a razão dessa PA.
por favor preciso pra hoje​

Answer 1

$\Large\boxed{\begin{array}{l}\sf 2x+4+17x+6=2\cdot(3x-2)\\\sf 19x+10=6x-4\\\sf 19x-6x=-4-10\\\sf 13x=-14\\\\\sf x=-\dfrac{14}{13}\\\\\sf r=3x-2-(2x+4)\\\sf r=3x-2-2x-4\\\sf r=x-6\\\sf r=-\dfrac{14}{13}-6=\dfrac{14-78}{13}\\\\\sf r=-\dfrac{64}{13}\end{array}}$