Simplify 9(3s-3t)-2t-10(8t+s)

$9 (3 s - 3 t) - 2 t - 10 (8 t + s)$

Simplify each term.

Apply the distributive property.

$9 (3 s) + 9 (- 3 t) - 2 t - 10 (8 t + s)$

Multiply $3$ by $9$ .

$27 s + 9 (- 3 t) - 2 t - 10 (8 t + s)$

Multiply $- 3$ by $9$ .

$27 s - 27 t - 2 t - 10 (8 t + s)$

Apply the distributive property.

$27 s - 27 t - 2 t - 10 (8 t) - 10 s$

Multiply $8$ by $- 10$ .

$27 s - 27 t - 2 t - 80 t - 10 s$

$27 s - 27 t - 2 t - 80 t - 10 s$

Simplify by adding terms.

Subtract $10 s$ from $27 s$ .

$17 s - 27 t - 2 t - 80 t$

Subtract $2 t$ from $- 27 t$ .

$17 s - 29 t - 80 t$

Subtract $80 t$ from $- 29 t$ .

$17 s - 109 t$

$17 s - 109 t$

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