Question

Resolva as seguintes equações: L)36.t-12t=5t+15 n)12.x-35=-54+9.x o)-21+7x=-9+4x p)8.x-25-7x-20=-5+10

Answer 1

l) 36t - 12t = 5t + 15

24t - 5t = 15

19t = 15

t = 15/19

n) 12x - 35 = - 54 + 9x

12x - 9x = - 54 + 35

3x = - 19

x = - 19/3

o) - 21 + 7x = - 9 + 4x

7x - 4x = 21 - 9

3x = 12

x = 12/3

x = 4

p) 8x - 25 - 7x - 20 = - 5 + 10

8x - 7x = 25 + 20 - 5 + 10

x = 55 - 5

x = 50