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Orlov [11]
3 years ago
8

the product of 7 and a number increased by 3 is equal to twice the number subtracted from 39 find the number

Mathematics
2 answers:
Vanyuwa [196]3 years ago
4 0
Say x is the number

7x +3 = 39 -2x
Add 2x to each side
9x +3 =39
Subtract 3 from each side 
9x =36
Divide by 9 on each side
x=4

Hope this helped
Neporo4naja [7]3 years ago
4 0

Answer:  The required number is 2.

Step-by-step explanation:  Given that the product of 7 and a number increased by 3 is equal to twice the number subtracted from 39.

We are to find the number.

Let x represents the given number.

Then, according to the given information, we have

7(x+3)=39-2x\\\\\Rightarrow 7x+21=39-2x\\\\\Rightarrow 7x+2x=39-21\\\\\Rightarrow 9x=18\\\\\Rightarrow x=\dfrac{18}{9}\\\\\Rightarrow x=2.

Thus, the required number is 2.

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3 years ago
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