8 and 9 tidak ush di jawab ya, mohon dibantu soal nya besok di kumpulin :) makasih

4. 1] -4 + 7 + 2 = 5 = benar
2] -20 - (-4) = -24 = salah
3] 15 - 3>-4+16 = benar
4] -5 - 7<-18 - (-4) = salah

Jawaban ; b : 1 dan 3

5. 3m + (-13) + 22 = 0
3m - 13 + 22 = 0
3m = 0 + 13 - 22
3m = -9
m = -3 (c)

6. 3x - 2 = 5x + 10
3x - 5x = 10 + 2
2x = 12
x = 6 (d)

7. -4 x 6 x (-7)
= -24 x -7
= 168 (d)



Maaf bila ada kesalahan