Question

2.n+3. (2.n+7)=13 qual eo valor de n

Answer 1

2n+3(2n+7)=13
2n+6n+21=13
8n=13-21
8n= -8
n= -1

Answer 2

2n + 3 (2n + 7) = 13
2n + 6n + 21 = 13
8n + 21 - 13 = 0
8n + 8 = 0
8n = -8
n = -8 / 8
n = -1

Espero ter ajudado. Valeu!