What is simplify-2[7a-(-7a+5b-1+6(a-8b+9))-(4b-8)] ?

The solution to simplify-2[7a-(-7a+5b-1+6(a-8b+9))-(4b-8)] is -16a-78b+90

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simplify-2[7a-(-7a+5b-1+6(a-8b+9))-(4b-8)]

simplify

- 2 [7 a - (- 7 a + 5 b - 1 + 6 (a - 8 b + 9)) - (4 b - 8)]

- 16 a - 78 b + 90

Solution steps

- 2 (7 a - (- 7 a + 5 b - 1 + 6 (a - 8 b + 9)) - (4 b - 8))

Simplify

7 a - (- 7 a + 5 b - 1 + 6 (a - 8 b + 9)) - (4 b - 8) : 8 a + 39 b - 45

= - 2 (8 a + 39 b - 45)

Expand

- 2 (8 a + 39 b - 45) : - 16 a - 78 b + 90

= - 16 a - 78 b + 90

52 \cdot 96

(1 - cos^{2} (x))^{2}

\frac{1 + i}{1 - \frac{1 + i}{1 - \frac{1 - i}{1 + i}}}

tan (x) cot (x) - cos^{2} (x)

\frac{2 a}{b} + \frac{a}{2 b} - \frac{a}{b} + \frac{2 a}{3 b}

What is simplify-2[7a-(-7a+5b-1+6(a-8b+9))-(4b-8)] ?
The solution to simplify-2[7a-(-7a+5b-1+6(a-8b+9))-(4b-8)] is -16a-78b+90