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if 4 times a number is decreased by 9 and then increased by 12, the result is 5 less than 2 times the number. find the number. B

Respuesta :

jcherry99

Answer:

Step-by-step explanation:

(4x - 9) + 12 = 2x - 5           Remove the brackets

4x - 9 + 12 = 2x - 5             Combine the left

4x + 3 = 2x - 5                    Subtract 2x from both sides

4x - 2x + 3 = - 5                 Combine

2x + 3 = - 5                         Subtract 3 from both sides

2x + 3 -3 = - 5 -3                Combine

2x = - 8                               Divide by 2

x = -8/2

x = -4

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