Question

X três quartos-1=124

Answer 1

x 3/4 -1=124
4x/4. 3/4 -4/4 =496/4
4x.3-4=496
12x=496+4
12x=500
x=500/12

Answer 2

x.3/4 -1=124 (m.m.c 4)
4x/4. 3/4 - 4/4 =496/4 
12x/4 - 4/4 = 496/4 (simplifica-se as unidades)
3x - 1 = 124
x = 124 +1 / 3
x = 125/3
x = 41,666...