Question

Me ajudem a resolver?

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

Answer 1

a) 3 x/2  + 1/5 = x /4
3 x/2  - x/4 = - 1/5 m.m.c =4
6 x/4 - x/4 = -1/5
5 x/4 = -1/5 multiplicando em cruz fica
25 x = -4
x = -4/25
b)1/2 + 3 x = 4
3 x = 4 - 1/2 m.m.c=2
3 x = 8 - 1/2
3 x = 7/2
x = 7/2 : 3
x = 7/2 . 1/3
x = 7/6