Can you check the following?
1. (-1/3)x = -5
multiply both sides by -3 because dividing by fraction is same as multiplying by its reciprocal, right?
Ans: -5(-3)= 15
2. x - (-3) = -8
+ (-3) + (-3)
x = -11
3. The signup fee to join Flexible Fitness Gym is $25. The monthly fee is $30. Elijah has paid $115 so far. Write and solve an equation to determine the number of months for which Elijah has paid.
Ans: Not sure about the equation.
115 - 25 = $90
$90/$30 = 3 months
Your answers are right.
3.
25 + 30x = 115