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3 years ago

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

Mathematics

1 answer:

Naya [18.7K]3 years ago

5 0

Answer: $\frac{9}{2}$

Step-by-step 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

$\frac{9}{2}$ = x

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