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find the greatest possible error for each measurement.

9 g

a.
1/2 g
b.
1/4 g
c.
1/6 g
d.
1/8 g

gpe = 1/2 of the unit measures

 since 9 is a whole number the gpe would be 1/2 g

i believe the answer to be 48

step-by-step explanation:

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x