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svp [43]
3 years ago
11

-x+8x solve simplify the expression by combining like terms

Mathematics
1 answer:
Aleks [24]3 years ago
3 0

the answer is 7x, becuase -1 + 8 is 7


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(36 3/4" + 36 3/8" + 371/2" +z) /4 = 36 5/8" 
This is the equation that you would get for the average. Now we just solve for z. 
Following PEMDAS you have to mulitply the equation by 4 to get rid of the divide by 4 part. 
4( (36 3/4" + 36 3/8" + 371/2" +z) /4 = 36 5/8)
Which does this
 36 3/4" + 36 3/8" + 371/2" +z = 146 1/2" 
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