Question

imi explica si mie cineva cum se rezolva exercitiul asta : 5/7•x=1 si 1/4:x=3 va rog urgent

Answer 1

1)5/7•x=1
5x/7-1
5x=1×7
5x=7
x=7/5
2) 1/4:x=3
1/4x=3
1=3*4x
1=12x
1/12=x
x=1/12