Question

How do you solve `1= x + 10`?

Answer 1

`x=-9`

Explanation:

To solve the equation, our aim is to `color(blue)"isolate"` the x on one side of the equation and have numeric values only on the other side.

To obtain this situation, subtract 10 from both sides. With equations if we perform an operation on one side then we must do the same operation to the other side.

subtract 10 from both sides.

`1-10=xcancel(+10)cancel(-10)`

`rArr-9=x" or " x=-9`

Answer 2

`x=-9`

Explanation:

One thing that you have to remember when you are solving for the x in an equation is that have to bring over on the other side the number.

If you are bringing any number or term over on the other side, all you have to do it change the sign of the equation.

For example in the case of your equation, when you are bringing over the positive 10 to the other side, you will be subtracting 10 on the other side of the equal sign.

`1=x+10`
`1-10=x`

Therefore this just makes your equation a simple subtraction.

`1-10=-9`
`x=-9`