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72 + 72 = 144
72+30=102
180+72=252
72
132
It is the property of n as the additive identity.
49 + 72 + 68 = 189
You would formulate this problem X/100 * 150 = 72 and solve for X.
72 !
54(x)+52+32(y)+72=212
U = 4 x 18 U = 72
-6x+72=x then -7x=-72 so x=72/7
(5,7)