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stepladder [879]
3 years ago
10

20 less than12 times a number is 64, what is the number

Mathematics
1 answer:
Genrish500 [490]3 years ago
3 0

20  <  12  ⋅  <em>x</em>  =  64

This is somewhat of a false equation though, due to  the left side  "20"  is not less than the right side  "12 ", which means that the given statement is false.

So I switched it up and made the variable "12"

<u>12  <  20  ⋅  </u><u><em>x</em></u><u>  =  64 </u>

12x - 20 = 64

12x = 64 + 20

12x = 84

12x⁄12 = 84⁄12  

x = 7

____

I hope this helps, as always. I wish you the best of luck and have a nice day, friend..

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Find the value of y for the following system of equations 5x + 3y = 10 x = y - 6
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Step-by-step explanation:

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{5 x + 3 y = 10 | (equation 1)

x = y - 6 | (equation 2)

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{5 x + 3 y = 10 | (equation 1)

x - y = -6 | (equation 2)

Subtract 1/5 × (equation 1) from equation 2:

{5 x + 3 y = 10 | (equation 1)

0 x - (8 y)/5 = -8 | (equation 2)

Multiply equation 2 by -5/8:

{5 x + 3 y = 10 | (equation 1)

0 x+y = 5 | (equation 2)

Subtract 3 × (equation 2) from equation 1:

{5 x+0 y = -5 | (equation 1)

0 x+y = 5 | (equation 2)

Divide equation 1 by 5:

{x+0 y = -1 | (equation 1)

0 x+y = 5 | (equation 2)

Collect results:

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