Answer :
Make an equation:
L = 4S - 3
Where 'L' is the amount of DVD's Leah has and 'S' is the aount of DVD's Sonia has.
Plug in 37 for 'L' and solve for 'S':
37 = 4S - 3
Add 3 to both sides:
40 = 4S
Divide 4 to both sides:
S = 10
So Sonia has 10 DVD's.
L = 4S - 3
Where 'L' is the amount of DVD's Leah has and 'S' is the aount of DVD's Sonia has.
Plug in 37 for 'L' and solve for 'S':
37 = 4S - 3
Add 3 to both sides:
40 = 4S
Divide 4 to both sides:
S = 10
So Sonia has 10 DVD's.
