The result of the equation - 130 plus 80 plus 60 plus 40, is found as follows;
130 + 80 + 60 + 40
= ( 130 + 80 ) + 60 + 40
= 210 + ( 60 + 40 )
= 210 + 100
= 310
Answer = 310
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The result of the equation - 130 plus 80 plus 60 plus 30, is found as follows;130 + 80 + 60 + 30= ( 130 + 80 ) + 60 + 30= 210 + ( 60 + 30 )= 210 + 90= 300Answer = 300
The result of the equation - 130 plus 80 plus 20 plus 80, is found as follows;130 + 80 + 20 + 80= ( 130 + 80 ) + 20 + 80= 210 + ( 20 + 80 )= 210 + 100= 310Answer = 310
The result of the equation - 80 plus 90 plus 60 plus 80, is found as follows; 80 + 90 + 60 + 80 = ( 80 + 90 ) + 60 + 80 = 170 + ( 60 + 80 ) = 170 + 140 = 310 Answer = 310
The result of the equation - 60 plus 90 plus 60 plus 80, is found as follows; 60 + 90 + 60 + 80 = ( 60 + 90 ) + 60 + 80 = 150 + ( 60 + 80 ) = 150 + 140 = 290 Answer = 290
The result of the equation - 120 plus 90 plus 60 plus 80, is found as follows; 120 + 90 + 60 + 80 = ( 120 + 90 ) + 60 + 80 = 210 + ( 60 + 80 ) = 210 + 140 = 350 Answer = 350