Question

Equacao de primeiro grau
A)
X/3 - 2/5= 1/4+7/2

B) 1-x/3 = 1/3

Answer 1

Olá...

a)

x/3 - 2/5 = 1/4 + 7/2

x/3 - 2/5 = 1 + 14/4

x/3 - 2/5 = 15/4⇒mmc 3, 5, 4 = 60

20x - 24 = 225

20x = 225 + 24

20x =249

x = 249/20

b)

1 - x/3 = 1/3 ⇒mmc = 3

3 - x = 1

- x = 1 - 3

- x = - 2 ⇒ (- 1)

x = 2

Bons estudos.