16 plus 10 plus 8 plus 6 plus 2 is equal to 42.
6 plus 8 - one of the basic laws of arithmetic
-3x + 6 + 15x =11x + 8 ie -3x + 15x - 11x = 8 - 6 ie x = 2
1+2+3+4+5+6+7+8+9=37
2 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 = 106
( 6 + 6 ) + ( 6 + 8 ) + ( 5 + 8 ) = 39
6 plus 7 plus 8 equals 6 plus 8 plus 7, what property is that?That is the associative property.
8+8+8+6+6+16 =52 All the addition can happen in the same step. When the operations are all the same you can do this.
6 + 6 + 8 + 3 = 23
28
If you mean: 6*(7+8)*(6+7)+8 then it works out as 1178
8 + 8 + 6 + 3 + 4 + 3 = 32
22! 8 + 8 is 16 + 6 = 22
-14
120
8 plus 7 is 15. 15 plus 6 is 21. :)
Of course it is. 6+8=14, 8+6=14. This is the commutative property of addition.