Question

Determine o valor de x na equação
0,005x – 0,002x + 0,001 = 0,007

Answer 1

Equação de 1° grau

$\sf 0,\:005x\:-\:0,\:002x\:+\:0,\:001\:=\:0,\:007\\\\\\\\\sf \bullet{Some\:os\:elementos\:similares:}\:0,5x-0,2x=0,3x\\\\\\\\\sf 0,3x+0,1=0,7\\\\\\\\\bullet {Multiplique\:ambos\:os\:lados\:por\:}10\\\\\\\\\sf 0,3x\cdot \:10+0,1\cdot \:10=0,7\cdot \:10\\\\\\\\\sf \bullet Simplifique\\\\\\\\\sf 3x+1=7\\\\\\\\\sf \bullet {Subtraia\:}1{\:de\:ambos\:os\:lados}\\\\\\\\\sf 3x+1-1=7-1\\\\\\\\\sf \bullet Simplifique\\\\\\\\\sf 3x=6$

$\sf \bullet{Divida\:ambos\:os\:lados\:por\:}3\\\\\\\\\sf \dfrac{3x}{3}=\dfrac{6}{3}\\\\\\\\\sf Simplifique\\\\\\\\\boxed{\boxed{\sf S=\{2\}}}$

Veja mais em:

• https://brainly.com.br/tarefa/33494374
• https://brainly.com.br/tarefa/1850200
• https://brainly.com.br/tarefa/2075695