For this case we must propose an algebraic expression associated with:
"four times a difference of a number and seven is 12"
So we have to:
Four times a difference of a number and seven is represented as: 
So we have the expression is:

We apply distributive property to the terms within parentheses:

We add 28 to both sides:

We divide between 4 on both sides:

Answer:

Answer:
C3H8 + 5O2 → 3MgO + 2NH3
Zn + 2HCl → ZnCl2 + H2
Ca(OH)2 + 2H3PO4 → Ca3(PO4)2 + 6H2O
4Al + 3O2 → 2Al2O3
Step-by-step explanation:
I have the exact same question and I got the answers correct.
25 grams per day that is the recommended daily intake of fiber