Question

6. Which of the following is NOT equivalent to the equction a + 3b=5c-92B. b = - (5C-9-a)A. a = 5C-9-3bC. 5 = (2+35+9)D. 3 = (Sc.- 9-a)C

Answer 1

Uhhhhhhhhhhhhhhhhhhhhhhh

Answer 2

To check if the expressions are equivalent, start from the base equation

`a+3b=5c-9`

now, the possible options are the equations cleared for a, b, 5, and 3.

clear for all the possible ones and check which of them is not correct

For a

`a=5c-9-3b`

for b

`\begin{gathered} 3b=5c-9-a \\ b=(5c-9-a)/(3) \end{gathered}`

for 5

`\begin{gathered} a+3b+9=5c \\ (a+3b+9)/(c)=5 \end{gathered}`

for 3

`\begin{gathered} 3b=5c-9-a \\ 3=(5c-9-a)/(b) \end{gathered}`

According to the possible optiones the equation that is not equivalent is option B because it is been multiplied by -1/3 and it must be just a 1/3