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Gabriel used the expression 2.5x + 2y – 2 to represent his total cost, and 28 – 2.5x – 2y to represent the amount of change he should receive from $30. What was Gabriel’s error?

i could use some help...i’m getting caught up but i had to start from a random point and don’t understand a bit!

Gabriel Used The Expression 25x 2y 2 To Represent His Total Cost And 28 25x 2y To Represent The Amount Of Change He Should Receive From 30 What Was Gabriels Err class=

Sagot :

Answer:

The entire expression should be subtracted from 30. To subtract the quantity, distribute the negative sign, which changes the signs on the terms. So, the –2 changes to positive and gets added to 30 instead of subtracted from it.

Step-by-step explanation:

Answer:

The entire expression should be subtracted from 30. To subtract the quantity, distribute the negative sign, which changes the signs on the terms. So, the –2 changes to positive and gets added to 30 instead of subtracted from it.

Step-by-step explanation:

SAMPLE

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