Yg diatas 1&3 aja yaaa 75-64:8-(-6)= .... Ditolong ya 3 soal aja kok yg di gambar pakai cara ya, mohon dibantu soalnya besok dikumpulin :) makasih

1.)
a = 3 b = -5 c = 2

2ab + 3bc
= 2.3.(-5) + 3.(-5).2
= (-30) + (-30)
= -60

3.)
Benar = 42 . 4 = 168
Salah = 4 . (-2) = -8
Tdk dijawab = 4 . (-1) = -4

Total = 168 + (-8) + (-4)
Total = 160 + (-4)
Total = 154


75 -64 : 8 - (-6)
= 75 - 8 + 6
= 77 + 6
= 83

Semoga membantu dan semoga bermanfaat...