Question

EXERCÍCIOS DE EQUAÇÕES 1º GRAU I) Resolva as equações: a) 6x = 2x + 16 b) 2x - 5 = x + 1 c) 2x + 3 =x+4 d) 5x + 7 = 4x + 10 e) 4x - 10 = 2x + 2 f) 4x - 7 = 8x - 2 f) 4(x+ 10)-2x + 10 = 0 g) 3(2x + 3) - 4(x-1) = 3​

Answer 1

Explicação passo-a-passo:

a) 6x = 2x + 16

6x - 2x = 16

4x = 16

/4 /4

x= 4

b) 2x - 5 = x + 1

2x - x = 1 + 5

x = 6

/1 /1

x = 6

c) 2x + 3 = x + 4

2x - x = + 4 - 3

x = 1

/1 /1

x= 1

d) 5x + 7 = 4x + 10

5x - 4x = 10 - 7

x = 3

/1 /1

x = 1

e) 4x - 10 = 2x + 2

4x - 2x = 2 + 10

2x = 12

/2 /2

x = 6

f) 4x - 7 = 8x - 2

4x - 8x = -2 + 7

-4x = +5

/-4 /-4

x = 5 ou x= -1.25

/-4

f) 4(x + 10) -2x + 10 = 0

4x + 40 - 2x + 10 = 0

4x - 2x = 0 - 10 - 40

2x = - 50

/2 /2

x= -25

g) 3(2x + 3) -4 (x - 1) = 3

6x + 9 -4x +4 = 3

6x - 4x = 3 - 4 - 9

2x = -10

/2 /2

x= -5