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nasty-shy [4]
3 years ago
12

3 added to 5 times a number and the result is multiplied by 4. The final result is 72. Find the number

Mathematics
1 answer:
Readme [11.4K]3 years ago
5 0
Hmm... I would say the equation would look like 3+5x=72/4. 
3+5x=72/4
3+5x=18
5x=18-3
5x=15
x=15/5
x=3

The number is 3

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Answer:

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Step-by-step explanation:

sorry if this is wrong

5 0
3 years ago
QUESTION 8. An unknown number is added to 8. The sum is
Rudik [331]

Answer:

82

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Let the unknown number be x

If an unknown number is added to 8, this is expressed as;

8 + x

<em>If The sum is  then divided by 9 to give the answer 10, then;</em>

<em>(8+x)/9 = 10</em>

<em>Cross multiply</em>

<em>8 + x = 9 * 10</em>

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Hence the unknown number is 82

3 0
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3x/8-1=5/8<br> How do I start to find out the answer to this equation?
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