Question

`18x + 20 + x = 10(x) - 3`

Answer 1

assuming you want us to solve for x

remember that you can do anything to an equation as long as you do it to both sides

18x+20+x=10x-3

combine like terms

19x+20=10x-3

minus 10x from both sides

19x-10x+20=10x-10x-3

9x+20=0-3

9x+20=-3

minus 20 from both sides

9x+20-20=-3-20

9x+0=-23

9x=-23

divide both sides by 9

`(9x)/(9)=(-23)/(9)`

`x((9)/(9))=(-23)/(9)`

`x(1)=(-23)/(9)`

`x=(-23)/(9)`

Answer 2

18x + 20 + x = 10x -3

Combine like terms

19x + 20 = 10x -3

Subtract 20 to both sides because whatever you do on one side you have to do it on the other side:

19x = 10x -23

Subtract 10x

9x = -23

Divide 9 to isolate x:

x = -23/9

Simplify to get a mixed number:

x = -2 5/9