Question

Encontre o valor de n: 2 · n + 3 · (2 · n + 7) = 13

Answer 1

Explicação passo-a-passo:

s)3n+2.5n-10=-49》3n+10n=-49+10》13n=39》n=39/13...b)2n+3(2n+7)=23》3n+6n=13-21》8n=-8》n=-1...c)3n+3n+3(n+1)=10》5n+3n+3=0》8n=10-3》8n=7》n=7/8...d)4n+2(n+2)-10=0》4n+2n+4=10》6n=10-4》6n=6》n=1..e)n+2=7》n=7-2》n=5...f)2(n+2)=15》2n+4=15》2n=15-4》2n=11》n=11/2

Answer 2

Resposta:

2n + 3. (2n + 7) = 13

4n + 21 = 13

21 - 13 = 4n

8 = 4n

8:4 = n

n= 2