Answer:

Step-by-step explanation:
Rewrite the Equation.
Multiply both sides of the Equation by 2.

Simplify both sides of the Equation.

Move all terms not containing
to the right side of the Equation.

All you have to do is times it by 4
<span>-8(5r+6)+9(6r+3)
= -40r - 48 + 54r + 27
= 14r - 21</span>
Answer:
The value of angle BAC = 75°
Step-by-step explanation:
=> Angle BAC + 105° = 180°
=> Angle BAC = 180° - 105°
=> Angle BAC = 75°