The law of 0, - 3, - 9, - 15, - 21

The law of 0, - 3, - 9, - 15, - 21

-3 (2n-1) = - 6N + 3, (n takes 1 / 2 or positive integer)
Therefore, the law of 0, - 3, - 9, - 15, - 21 (expressed by the algebraic formula containing n) is as follows:
-6N + 3, (n takes 1 / 2 or positive integer)

If the values of algebraic formula 12-3 (9-y) and algebraic formula 5 (y-4) are equal, then y = 0___ ．

According to the meaning of the question: 12-3 (9-y) = 5 (y-4), remove the brackets: 12-27 + 3Y = 5y-20, the solution: y = 52

If the values of algebraic formula 12-3 (9-y) and algebraic formula 5 (y-4) are equal, then y = 0___ ．

According to the meaning of the question: 12-3 (9-y) = 5 (y-4), remove the brackets: 12-27 + 3Y = 5y-20, the solution: y = 52

-1,3,-5,7,-9… Express it in algebra! I'll use it now!

(2n-1) multiplied by (- 1) to the power of N, n is a positive integer greater than or equal to 1