Answer:
(x·)-4
If that's not what you're looking for here's an example of what you would do if you put a number (6, for example) into the equation and the answer is the unknown number:
(6·)-4= x
If you have
2 KNOWN sides & 1 Angle ;
Use Cosine Rule
If you have 3 KNOWN sides,
Also Cosine Rule
If you have
2 KNOWN angles & 1 side,
Use SINE rule
If it's a right-angled triangle, use SOH CAH TOA
Hopefully this helps
Step-by-step explanation:
12+ 3x= -24 -3x
Collect like terms
12 +24= - 3x -3x
36 = - 6x
Divide both sides by -6
Therefore, <em>x</em><em> </em>= -6