Question

49+с+38 при с=51; 62; 20а•15при а=5;4;

Answer 1

49+51+38=138;49+62+38=149.
20×5×15=1500.20×4×15=1200.

Answer 2

49 + с + 38 = 49 + 51 + 38 = 138; 20а • 15 = 20 • 5 • 15 = 115; 20а • 15 = 20 • 4 • 15 = 1200.