Question

RESOLVA A EQUAÇÃO: 2(x – 3) + 4(2x + 1) = 8 – 5(x – 4). *

a) 2

b) 6

c) 4

d) -2
cálculo pfvvv​

Answer 1

• Equação de 1° grau

$\sf 2(x-3)+4(2x+1)=8-5(x-4)\\\\\\\sf 10x-2=-5x+28\\\\\\\sf 10x-2+2=-5x+28+2\\\\\\\sf 10x=-5x+30\\\\\\\sf 10x+5x=-5x+30+5x\\\\\\\sf 15x=30\\\\\\\sf \dfrac{15x}{15}=\dfrac{30}{15}\\\\\\\boxed{\sf S=\{ 2\}}$