Question

PRECISO URGENTE PRA AMANHA!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Resposta:

Explicação passo a passo:

$a)$

$15+(x+3)+(x+3)+(x+3)=$

$15+x+x+x+3+3+3=$

$15+3x+9=$

$3x+24$

$Portanto...$

$a_{x}=3x+24$

$a_{1}=3.(1)+24=>a_{1}=3+24=>a_{1}=27$

$a_{2}=3.(2)+24=>a_{2}=6+24=>a_{2}=30$

$a_{3}=3.(3)+24=>a_{3}=9+24=>a_{3}=33$

$a_{4}=3.(4)+24=>a_{4}=12+24=>a_{4}=36$

$a_{5}=3.(5)+24=>a_{5}=15+24=>a_{5}=39$

$a_{6}=3.(6)+24=>a_{6}=18+24=>a_{6}=42$

$a_{7}=3.(7)+24=>a_{7}=21+24=>a_{7}=45$

$a_{8}=3.(8)+24=>a_{8}=24+24=>a_{8}=48$

$a_{9}=3.(9)+24=>a_{9}=27+24=>a_{9}=51$

$a_{10}=3.(10)+24=>a_{10}=30+24=>a_{10}=54$

$a_{11}=3.(11)+24=>a_{11}=33+24=>a_{11}=57$

$a_{12}=3.(12)+24=>a_{12}=36+24=>a_{12}=60$

$\{27;30;33;36;39;42;45;48;51;54;57;60\}$

$b)$

  $15+(x+3)+(x+3)+(x+3)=$

  $15+3\:.\:(x+3)=$

 $Colocando\:(3)\:em\:evidencia...$

  $3.[(x+3)+5]$

 $Ate\:Breve!\\Jean318$