7 + 23 = 30
23+7+10=40
13 + 23 + 12 + 7 = 55
23 + 3 + 17 + 7 = 50
23
-23+7=-16
3+6+5+7+(9-7)=23
60.
'X-7 plus 23-6' can be simplified and expressed as: 'x+10'
2x + 7 + 2x = 23 4x + 7 = 23 4x = 16 x = 16/4 x = 4
-23+16 is equal to -7.
7 + (-30) =7 - 30 = -23
7 + 16 = 23