If 3 is added to a number and the sum is multiplied by 3 the result is 7 times the number decreased by 9 find the numbers

Question

asked Oct 26, 2019 47.8k views

1 Answer

Frank Niessink · Answer 1 · 2019-10-30T04:27:51+0000

Answer:
(9)/(2)

Explanation:

3(3 + x) = 7x - 9

9 + 3x = 7x - 9 distributed 3 on the left side

-3x -3x

9 = 4x - 9

+9 +9

18 = 4x

÷4 ÷4

(9)/(2) = x