Question

2x-1=17

Answer 1

Step 1: Isolate the variable

Answer 2

Do you know how to isolate the variable?

Answer 3

Well you just went offline so I will explain it xD

Answer 4

You basically want the variable(x) to be alone on one side of the equation. For example we want to make it look like this:

\[x = 5\]

So to do this we have to use remove that -1 to make 2x alone on that side of the equation

Answer 5

But remember, when solving for such an equation, you must do the same thing to BOTH sides of the equation. So were going to +1 to -1 to make it gone, but we must also +1 to 17.

We get the following:

\[2x = 18 \]

Answer 6

-1 is basically saying minus positive, so we would use the opposite operation to solve the equation. The same goes for 2x.

2x is basically \[2 \times x \]

So we would use the opposite operation, dividing

\[2x \div 2 = x\]

Answer 7

But remember, when we do something to one side, we must do it to the other side, so we do:

\[18 \div 2 = 9 \]

We now get

\[x = 9\]

Answer 8

To check your work put 9 in for x and solve the equation

\[2 \times 9 - 1 = 17\]

Answer 9

@known4modesty