Determinar el valor de
a)![A) 15- \left \{ 6- [7*3+2*5+(3-3*5)]} \left\}.\\\\ B) 12- \left \{12+[7*4+2-(4+4*3)]} \left\}\\](https://tex.z-dn.net/?f=A%29+15-+%5Cleft+%5C%7B+6-+%5B7%2A3%2B2%2A5%2B%283-3%2A5%29%5D%7D+%5Cleft%5C%7D.%5C%5C%5C%5C+B%29+12-+%5Cleft+%5C%7B12%2B%5B7%2A4%2B2-%284%2B4%2A3%29%5D%7D+%5Cleft%5C%7D%5C%5C+ "A) 15- \left \{ 6- [7*3+2*5+(3-3*5)]} \left\}.\\\\ B) 12- \left \{12+[7*4+2-(4+4*3)]} \left\}\\")
a)
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15-{6-[7*3+2*5+(3-3*5)]}
15-{6-[7*3+2*5+(3-15)]}
15-{6-[7*3+2*5+-12]}
15-{6-[7*3+2*5-12]}
15-{6-[21+10-12]}
15-{6-[31-12]}
15-{6-19}
15-{-13}
a = 28
b) 12-{12+[7 * 4 + 2 -(4+4*3)]}
12-{12+[7 * 4 + 2 -(4+12)]}
12-{12+[7 * 4 + 2 -16]}
12-{12+[28 + 2 -16]}
12-{12+[28 -14]}
12-{12+14}
12-26
= -14
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