Question

2x/5 + 15x-1/20 =1/3 determine o valor de 2x+4

Answer 1

2 x/5 + 15 x - 1 / 20 = 1/3
m.m.c = 60
24 x/60 + 3(15 x - 1)/60 = 20/60 eliminar o denominador
24 x + 45 x - 3 = 20
69 x  - 3 = 20
69 x = 20 + 3
x = 23 /69
 
2 x + 4 = 0
2 x = -4
x = -4/2
x = - 2