How do you calculate 7 (4 - -4)?

2008-02-19 1:34 pm

Thats 7 multiplied by 4 minus , minus 4 in brackets. tanks

回答 (6)

2008-02-19 1:44 pm

✔ 最佳答案

( - )( - ) = ( + )
( 4 - - 4 ) = ( 4 + 4 )
= 8
( 7 )( 8 ) = 56

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2008-02-19 1:39 pm

7 [ 4 - ( - 4) ]
7 [ 4 + 4 ]
7 x 8
56

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2008-02-19 1:52 pm

Subtracting a negative number is equivalent to adding.

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2008-02-19 1:46 pm

7(8) =
56

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2008-02-19 1:45 pm

7[(4 - (-4)]
= 7[4 + 4]
= 7[8]
= 56

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2008-02-19 1:45 pm

that's such an easy Q.
7[4-(-4)]
=7X8
=56

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