What is 9(3x+8)-3(4x+21) ?

The solution to 9(3x+8)-3(4x+21) is 15x+9

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simplify 9(3x+8)-3(4x+21)

simplify

9 (3 x + 8) - 3 (4 x + 21)

15 x + 9

Solution steps

9 (3 x + 8) - 3 (4 x + 21)

Expand

9 (3 x + 8) : 27 x + 72

= 27 x + 72 - 3 (4 x + 21)

Expand

- 3 (4 x + 21) : - 12 x - 63

= 27 x + 72 - 12 x - 63

Group like terms

= 27 x - 12 x + 72 - 63

Add similar elements:

27 x - 12 x = 15 x

= 15 x + 72 - 63

Subtract the numbers:

72 - 63 = 9

= 15 x + 9

\frac{31}{20}

(2 9 - x^{2})^{2}

(n^{2} + 4) (n - 1)

(x + 4 b) (x - 1) + y (x - 1)