16 plus 10 plus 8 plus 6 plus 2 is equal to 42.
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2 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 = 106
2 + 4 + 6 4 + 6 = 10 6 + 10 = 16 10 + 16 = 26
16 + 72(-8) + 6(-2) 16 - 576 - 12 = -572
square root of 36 plus 10=6+10 , since square root of 36 =6=16Answer : 16
7X + 2Y = 10 - 7X + Y = - 16 -----------------------just add 3Y = - 6 Y = - 2 --------------find X, top equation 7X + 2(- 2) = 10 7X - 4 = 10 7X = 14 X = 2 ------------check both original equations for consistency; top first 7(2) + 2(- 2) = 10 14 - 4 = 10 10 = 10 ------------top checks; now check bottom equation - 7(2) - 2 = - 16 -14 - 2 = - 16 - 16 = - 16 ------------------both check and are then consistent