(-3){(-6)+(20)}*(3)-(7-9)(-2).?
回答 (5)
2009-07-17 4:28 pm
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(-3){(-6)+(20)}*(3)-(7-9)(-2)
(-3){-6 + 20} * (3) - (-2)(-2)
(-3)(14) *(3) - (4)
-42*(3) - 4
-126 - 4 = -130
2009-07-17 11:26 pm
2009-07-17 11:54 pm
(-3){(-6) + 20} * 3 - (7 - 9)(-2)
= (-3){20 - 6} * 3 - (-2)(-2)
= (-3){14} * 3 - 4
= (-42) * 3 - 4
= -126 - 4
= -130
= (-3){20 - 6} * 3 - (-2)(-2)
= (-3){14} * 3 - 4
= (-42) * 3 - 4
= -126 - 4
= -130
2009-07-17 11:30 pm
Order of operations says it's -130
2009-07-17 11:29 pm
-130
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