Question

Find the value of a. The diagram is not to scale.
21°-
129
(2q+6)°
9°

Answer 1

−2322q−6945

Explanation:

Simplify 129(2q+6) * 9 to 1161(2q + 6)

Expand by Distributing terms

21 - (2322q + 6966)

Remove parentheses.

21 - 2322q - 6966

Collect like terms.

-2322q + (21−6966)

Simplify

-2322q - 6945

Done