Question

Resolva as equações de 1° grau com denominador:

A) x+5/2=7x
B) 5x-12-x/x=2

Answer 1

A) x + 5 /2 = 7x
--> x + 5 = 7x (2)
--> x + 5 = 14x
--> 14x = x + 5
--> 14x - x = 5
--> 13x = 5
--> x = 5/13

B ) 5x - 12 - x/x = 2
--> 5x - 12 - x = 2
--> 5x - x - 12 = 2
--> 4x -12 = 2
--> 4x = 2 + 12
--> 4x = 14
--> x = 14/4...(÷2)
--> x = 7/2