1680
80 add 60 = 140
60 - 140 = -80
280
140 - 80 = 60
The GCF is 20. The LCM is 420.
1200 1200/80 = 15 1200/60 = 20
60 + 80 = 140
14, 28, 42, 56, 70, 84, 98, 112, 126, 140, 15420, 40, 60, 80, 100, 120, 140, 160The LCM is 140.
-80
The result of the equation - 50 plus 90 plus 60 plus 80, is found as follows; 50 + 90 + 60 + 80 = ( 50 + 90 ) + 60 + 80 = 140 + ( 60 + 80 ) = 140 + 140 = 280 Answer = 280
The result of the equation - 130 plus 10 plus 60 plus 80, is found as follows;130 + 10 + 60 + 80= ( 130 + 10 ) + 60 + 80= 140 + ( 60 + 80 )= 140 + 140= 280Answer = 280
The LCM is: 1680