-9+r/7=-7 i am having some trouble

Question

with these types of answers everytime i get a problem like this i go completely blank

Answer 1

You said:

-9+r/7=-7

Is it:

(-9 + r) / 7 = -7

OR:

-9 + (r/7) = -7

In either case, you would solve it using these general steps:

Remember to always perform the same action to both sides of an equation

1. clear fractions by multiplying both sides by the denominator (7 in this case). If there were more than one fraction, you would multiply by the least common denominator.
2. collect all unknown terms on the left, and all constant terms on the right
3. Simplify and solve for the unknown

Solution for each of the 2 cases above:

I: (-9 + r) / 7 = -7

multiply both sides by 7:

-9 + r = -49

r = -40

II: -9 + (r/7) = -7

multiply both sides by 7:

-63 + r = -49

r = 14