Respuesta :

pcai26

Answer:

8. x=-5 9. x=10 10. x=14

Step-by-step explanation:

x+9=4

x=-5

-90=-100+x

x=10

x/2=7

x=14

Answer:

Step-by-step explanation:

X+9=4

To find X move 9 over to the Right hand side of the equation

Then it becomes X=4-9.

X=-5(A)

-90= -100+x

Move -100 to the other side of the equation, It becomes

-90+100=x

x=10

x/2=7

Cross Multiply

x=2*7

x=14.

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