Question

2a/5-3/4=3a/20 calculo

Answer 1

2a/5 - 3/4 = 3a/ 20
Calculando MMC:
5 - 4 -20 / 2
5 - 4 - 10/2
5 -2 - 5 / 2
5 - 1 - 5/ 5
1 - 1 - 5
MMC= 2 x 2 x2 x 5
MMC = 40
2a/5/8 - 3/4/10 = 3a/20/2
Eliminando denominadores e mudando numeradores:
16 a - 30 = 6a
Resolvendo:
16a - 6a = 30
10 a = 30
a = 30/10
a= 3