Jawabanmu

2014-08-19T18:39:22+07:00
A. 5 x (15-6)
= 5 x 9
=45

b. 12 x (-7) + (-16) : (-2)
= -84 + 8
= -76

c. -15 : (-3) - 7 x (-4)
= 5 - (-28)
= 5 + 28
= 33

d. [1 + 2 : 3 x 4] x [9 x 7 (7-8) : (6+5)]
=  [ 1 + 2 : 12] x [ 9 x 7(-1) ; 11]
=  [ 1 + 2/12] x [ 9 x (-7) :11]
=  [ 12
/12 + 2/12 ] x [(-63)/11]
=  [14
/12] x [(-63/11)]
=  [7
/6] x [(-63/11]
=  -441
/66
35 4 35
Btw, itu yang garis miring apa ya ?, itu dibagi atau garis bawah (per)
good