Question

URGENTE!!!
GENTE PELO AMOR DE DEUS

Resolva:


1) x/2 + x/4 = 2


2) 17n + 2 = 10 + 5x


3) 5x + 1/4 = 10x + 6/9


4) 5x - 10 = x + 1/2


5) 3(x+5)/6 + 2x/4 = 7


6) x/4 - x/3 = 2x - 50

Answer 1

Explicação passo-a-passo:

1) x/2 + x/4 = 2

mmc: 4

(2x + x)/4 = 2

3x/4 = 2

3x = 8

x = 8/3 = 2,666

2) 17n + 2 = 10 + 5x

vou assumir que esse "n" era um "x"

17x + 2 = 10 + 5x

17x - 5x = 10 -2

12x = 8

x = 8/12 = 0,666

3) 5x + 1/4 = 10x + 6/9

5x -10x = 6/9 - 1/4

mmc: 36

-5x = (24 - 9)/36

-5x = 15/36 (simplifica em cima e embaixo por 3)

x = 5/12*5

x = 5/60 = 0,08333

4) 5x - 10 = x + 1/2

5x-x = 1/2 + 10

mmc: 2

4x = (1 + 20)/2

4x = 21/2

x = 21/8 = 2,625

5) 3(x+5)/6 + 2x/4 = 7

(x+5)/2 +2x/4 = 7

x/2 + 5/2 +2x/4 = 7

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

mmc: 4 mmc: 2

(2x + 2x)/4 = (14-5)/2

4x/4 = 9/2

x = 9/2 = 4,5

6) x/4 - x/3 = 2x - 50

x/4 - x/3 - 2x = -50

mmc: 12

(3x - 4x - 24x)/13 = -50

-25x/14 = -50

x/14 = -50/-25

x/14 = 2

x = 28