Question

How do you solve `1+ x - 3x = - 9`?

Answer 1

`x=5`

Explanation:

Collect like terms on the left side of the equation.

`1+(x-3x)=-9`

`rArr1-2x=-9`

subtract 1 from both sides.

`cancel(1)cancel(-1)-2x=-9-1`

`rArr-2x=-10`

To solve for x, divide both sides by - 2.

`(cancel(-2) x)/cancel(-2)=(-10)/(-2)`

`rArrx=5" is the solution"`