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Setler79 [48]
3 years ago
14

Select all of the following expressions that are equivalent to ab - 2 = c

Mathematics
2 answers:
saveliy_v [14]3 years ago
6 0

Answer:

Option C.

Step-by-step explanation:

The given expression is ab - 2 = c

Option a : a = \frac{c}{b} - 2

                 ab = c - 2b

                Not equivalent to the original expression.

Option b : b = c + \frac{2}{a}

                 ab = ac + 2 ⇒  (\frac{ab-2}{a}) = c

                Not equivalent

Option c  : ab = c + 2

                  ab - 2 = c

               Equivalent to original expression

Option d : a - \frac{c}{2} = b

                 2a - c = 2b

                Not equivalent

Option e : b - \frac{2}{c} = a

                 bc - 2 = ac ⇒ c (b-a) = 2 ⇒ c = \frac{2}{b-a}

                 Not equivalent

Option f : a = c + \frac{2}{b}

                ab = bc + 2

               (\frac{ab-2}{b} ) = c

              Not equivalent

NISA [10]3 years ago
3 0
The only one that's equivalent is The 3rd one. ab=c+2
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