Question

E) 3 - 2x = 15
what is x​

Answer 1

3 - 2x = 15

-2x = 15 - 3

-2x = 12

x = 12 ÷ 2

x = 6

Answer 2

x = -6

Explanation:

We have to find the value of x in given equation
`3 -2x = 15`

Step 1 : We have to eliminate 3 from LHS

We proceed this by subtracting 3 from both the sides to balance the equation

`3 - 2x = 15\\3 - 3 -2x = 15 - 3\\-2x = 12`

Step 2: Now, we have to eliminate -2 from LHS

We proceed this by dividing both sides by -2

`-2x = 12\\(-2x)/(-2) = (12)/(-2) \\x = -6`

Therefore we have x =-6