Sove the expressions below:
 
(a) \((10p − 4q + 15)\) from \(3 p − ( 6 q − 7 )\):
 
(b) \(10x + 2 + 10y\) from \(–3y + 8 – 3x\):
 
(c) \(8g+4h-10\) from \(7h – 8g + 20\):