Question

po favor ajudar eu :)
​

Answer 1

Resposta:

a) w/4 + w/5 - w/3 = w/2 - 23

15w/60 + 12w/60 - 20w/60 = 30w/60 - 1380/60

15w + 12w - 20w = 30w - 1380

15w + 12w - 20w - 30w = -1380

-23w = -1380

w = -1380/-23

w = 60

b) x+2/4 + x+3/3 = x-1/5 + 4

15x+30/60 + 20x+60/60 = 12x-12/60 + 240/60

15x + 30 + 20x + 60 = 12x - 12 + 240

15x + 20x - 12x = -12 + 240 - 60 - 30

23x = 138

x = 138/23

x = 6

c) 2(y+4)/5 + 3(2y - 2)/10 = 5(y-6)/4 + 7

2y + 8/5 + 6y - 6/10 = 5y - 30/4 + 7/1

8y + 32/20 + 12y - 12 = 25y - 150 + 140/20

8y + 32 + 12y - 12 = 25y - 150 + 140

8y + 12y - 25y = -150 + 140 - 32 + 12

-5y = -30

y = -30/-5

y = 6