70746-(629а+278а)+(22а+80а)= 2000b+(68890b-83b)-(187b+65b)=

Question

70746-(629а+278а)+(22а+80а)=
2000b+(68890b-83b)-(187b+65b)=

Answer 1

1) =(629+278) =907
(22+80)=102
907+102=1009
70746-1009=69737
2) (68890-83)=68807
(187+65)=252
68807-252=68555
2000+68555=70555