D=-7×2+24÷(-4)-(6-9)
D = - 14 - 6 - ( - 3)
= - 20 + 3 = - 17
E=(25-42)×(9-15÷(3-3))
E = ( - 17 ) x ( 9 - 15 : 0 )
E = - 17 x 9 = - 153
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D=-7×2+24÷(-4)-(6-9)
D = - 14 - 6 - ( - 3)
= - 20 + 3 = - 17
E=(25-42)×(9-15÷(3-3))
E = ( - 17 ) x ( 9 - 15 : 0 )
E = - 17 x 9 = - 153