Question

Resolva as equações a seguir: a) 9x + 2 = 7x b) 11x + 17 = 10x + 13 c) X + x/4 = 20 d) 6x – 4(x-5) – (5-3x) = 0 e) X2 – 7x + 10 = 0 f) X2 – 5x = 0 g) 5x2 = 0 h) – x2 + 16x – 64 = 0 OBS: 1

Answer 1

Resposta:

a) 9x+2=7x

9x-7x=-2

2x= -2

x=-1

b)11x+17=10x+13

11x-10x= -17+13

-x= -4

x=4

c) x+ x/4=20

4x/4+ x/4=80/4

4x+x=80

5x= 80

x=16

d) 6x-4(x-5)-(5-3x)=0

6x-4x+20-5+3x=0

6x-4x+3x =-20+5

5x=-15

x=-3

Explicação passo-a-passo: