Question

1- Resolva as equações de 1° grau:​

Answer 1

Resposta:

a)

$5x+10=0\\5x=-10\\x=\frac{-10}{5}\\x=-2$

b)

$3x-75=0\\3x=75\\x=\frac{75}{3}\\x=25$

c)

$2(x+4)=10\\2x+8=10\\2x=10-8\\2x=2\\x=\frac{2}{2}\\x=1$

Answer 2

Resposta:

a) -2

b) 25

c) 1

Explicação passo-a-passo:

a)

5x + 10 = 0

5x = 0-10

5x = -10

x = -10/5

x = -2

b)

3x-75=0

3x=0+75

3x=75

x=75/3

x=25

c)

2.(x+4)=10

2.x+2.4=10

2x+8=10

2x=10-8

2x=2

x=2/2

x=1