Fifteen is added to the product of a number and 6. the result is 9. solve for the number

Based on the fact the result of acquired when this number is multiplied by 6 and the product is added to 15, the number in question is -1.

When the number in question is multiplied by 6 and then added to 15, the result is 9. Assuming that number is x, the relevant equation is:

(x × 6 ) + 15 = 9

6x + 15 = 9

6x = 9 - 15

x = -6/6

x = - 1

In conclusion, the number is -1.

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Fifteen is added to the product of a number and 6. The result is 9. Solve for the number

the number is  x

6x + 15 = 9

6x = 9 - 15

6x = -6

x = 6 : (-6)

x = -1

-1 is your answer

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

idk

step-by-step explanation: