Question

a)x/5 + 1 =2x/3
b)x/3 + 4 =2x
c)x/2 + 4 =1/3
d)x/5 + x/2 =7/10
e)x/2 - 7 = x/4 + 5
f)x/6 + x/3 = 18 - x/4
g)x/2 + x/3 =x +7/3 os dois últimos são por 3
h)x-1/2 (juntos) + x-2/3 (juntos) = x-3/4( juntos)
urgente me ajudem ​

Answer 1

a) x/5 + 1 = 2x/3

mmc = 15

3x + 15 = 10x

7x = 15

x = 15/7

b) x/3 + 4 = 2x

x + 12 = 6x

5x = 12

x = 12/5

c) x/2 + 4 = 1/3

mmc = 6

3x + 24 = 2

3x = -22

x = -22/3

d) x/5 + x/2 = 7/10

mmc = 10

2x + 5x = 7

7x = 7

x = 1

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

mmc = 4

2x - 28 = x + 20

x = 48

f) x/6 + x/3 = 18 - x/4

mmc = 12

2x + 4x = 12*18 - 3x

9x = 12*18

x = 24

g) x/2 + x/3 =x +7/3

mmc = 6

3x + 2x = 6x + 14

x = -14

h) (x - 1)/2 + (x - 2)/3  = (x - 3)/4

mmc = 12

6x - 6 + 4x - 8 = 3x - 9

7x = 5

x = 5/7