7-4-3
3+4-7
doesnt look familiar but im gonna guess the associative
It is: 55+19 = 74
142 + 74 = 216
74
74 (10*5)+(8*3) = 74
74
74 + 23 = 97
inverse
74
The combination is numerous. Ex: 73 + 1 = 74 or 72 + 2 = 74 or 71 + 3 = 74 and so on...
The answer is 623. Simply add up all of the numbers arithmetically like you would for two plus two. To make sure the answer is correct, check your work using a calculator.
74 units.
74 =