Simplify 10-(3-7(9+x))

$10 - (3 - 7 (9 + x))$

Simplify each term.

Simplify each term.

Apply the distributive property.

$10 - (3 - 7 \cdot 9 - 7 x)$

Multiply $- 7$ by $9$ .

$10 - (3 - 63 - 7 x)$

$10 - (3 - 63 - 7 x)$

Subtract $63$ from $3$ .

$10 - (- 60 - 7 x)$

Apply the distributive property.

$10 - - 60 - (- 7 x)$

Multiply $- 1$ by $- 60$ .

$10 + 60 - (- 7 x)$

Multiply $- 7$ by $- 1$ .

$10 + 60 + 7 x$

$10 + 60 + 7 x$

Add $10$ and $60$ .

$70 + 7 x$

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