Respuesta :

9h+8-12=-40

9h-4= -40

Move -4 to the other side. Sign changes from -4 to +4.

9h-4+4= -40+4

9h= -36

Divide by 9

9h/9= -36/9

Cross out 9 and 9 , divide by 9. Becomes 1*1*h= h

h= -4

Answer : h= -4

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