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andriy [413]
3 years ago
15

7x − 12 = 5x + 17 what is x?

Mathematics
2 answers:
Ksju [112]3 years ago
7 0

Answer:

x = 14.5

Step-by-step explanation:

<u>Step 1:  Subtract 5x from both sides </u>

7x − 12 - 5x = 5x + 17 - 5x

2x - 12 = 17

<u>Step 2:  Add 12 to both sides </u>

2x - 12 + 12 = 17 + 12

2x = 29

<u>Step 3:  Divide both sides by 2 </u>

2x / 2 = 29 / 2

<em>x = 14.5 </em>

Answer:  x = 14.5

erastovalidia [21]3 years ago
5 0

Answer:

x=14.5

Step-by-step explanation:

The given equation is :

7x- 12 = 5x + 17

Taking the terms of 'x' to one side and the constants terms to the other side.

Subtracting '5x' both the sides

7x-12-5x=5x+17-5x\\\\7x-5x-12=17\\\\2x-12=17

Adding '12' both the sides

2x-12+12=17+12\\\\2x=29\\\\x=29/2

x=14.5

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Answer:

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Step-by-step explanation:

Given:

If 100 people drink 1.5 cups of coffee a day and the cost per cup is .40

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So, we have the unit rate, and we have to find the cost of 1.5 cup by multiplying 0.40.

<em>1.5 cup of coffee cost </em>1.5\times 0.40=0.60.

<em>Thus, 1.5 cup cost 0.60.</em>

<em>If, 100 people drink 1.5 cups. </em>

<em>Then, total cost of  100 people drinking 1.5 cups of coffee = </em>100\times 0.60=60<em />

<em>As, place is open 5 days a week.</em>

So, to get the cost of coffee in 5 days of a week we multiply 5 by 60:

5\times 60\\\\=300.

<em>Hence, the cost of coffee in a week is 300.</em>

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6 0
3 years ago
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Complete question :

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