Answer :
3/5 x=21 /*5
3x= 105
x= 35
She brought 35
Answer to comment:
1/7(14x+7)-5=6 /*7
14x+7-35=42
14x=42-7+35
14x= 70 /:14
x= 5
3x= 105
x= 35
She brought 35
Answer to comment:
1/7(14x+7)-5=6 /*7
14x+7-35=42
14x=42-7+35
14x= 70 /:14
x= 5