Respuesta :

100=-2x+40

100-40=-2x
isolate the variable by subtracting 40 from both sides

60=-2x
divide 60 by -2

-30=x

Answer:

-30

Step-by-step explanation:

100= -2x + 40

 -40          -40

60= -2x       0  

divide -2/-2= 1

divide 60/ -2= -30

X= -30

Hope this helped!

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