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Andre45 [30]
3 years ago
8

Simplify the expression

Mathematics
1 answer:
raketka [301]3 years ago
3 0

Answer:

147

Step-by-step explanation:

82+9(12÷3×2)-7

82+9(4×2)-7

82+9(8)-7

82+72-7

154-7

147

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Ling worked three more hours on Tuesday than she did on Monday. On Wednesday, she worked one hour more than twice the number of
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Let x be the number of hours ling work on monday.

We know that she worked three more hours on tuesday that in monday, this can be express as :

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We also know that in wednesday she worked on more hour than twice the number on mondays, this can be expressed as:

2x+1

The total number of hours she worked this three days in two more than five the number of hours she worked on monday, this can be express as :

5x+2\\

Now , once we have all the expressions we add the expressions of the days and equate them to the total

x+(x+3)+(2x+1)=5x+2

Now we solve the equation

x+(x+3)+(2x+1)=5x+2\\x+x+3+2x+1=5x+2\\4x+4=5x+2\\5x-4x=4-2\\x=2

Therefore , she worked 2 hours on monday.

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3 years ago
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Round 35295 to the nearest thousand
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\\ \rm\longmapsto Area=255m^2

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