Question

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

Answer 1

Resolva:a) 5x=2x + x-2             mmc = 6
     2    1      3

15x = 6x + 3(x-2) ==> 15x = 6x + 3x-6

15x-9x = - 6 ==> 6x = -6 

x = - 1
============================================
b)x-3 -2x-1 = 5                  mmc = 20
     4       5      1

5(x-3) -4(2x-1) = 100 ==> 5x - 15 - 8x + 4 = 100

- 3x = 100 + 11(-1) ==> 3x = - 111
 
x = - 37