Isolate the variable on the following problem. show your work.

-2=-4+x

x=2

Step-by-step explanation:

Add 4 to both sides:

-2=-4+x

-2+4=-4+4+x

2=x

Step-by-step explanation:

First we must add 4 to both sides.

+4      +4

-4 + 4 = 0

-2 +4 = 2

Isolating a variable means that it is alone on its side of the eqation.

x is now isolated and we also have the solution for it.

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm