Jawab pls MTK DASAR I pke caranya ya, ada 8 nomor 1.4-2(8-11)+6= 2.-4[5(-3+12-4)+2(13-7)]= 3.5[-1(7+12-16)+4]+2= 4. 3/4-7 + 3/21 - 1/6 5.1/3[1/2(1/4-1/3)+1/6]=

1. 4-2(8-11)+6
= 4-2(-3)+6
= 4-(-6)+6
= 4+6+6
= 16

2. -4[5(-3+12-4)+2(13-7)]
= -4[5(5)+2(6)]
= -4[25+12]
= -4[37]
= -148

3. 5[-1(7+12-16)+4]+2
= 5[-1(3)+4]+2
= 5[-3+4]+2
= 5[1]+2
= 5+2
=7

4. 3/4-7+3/21-1/6
= 63/84-56/84+12/84-14/84
= 7/84+12/84-14/84
= 19/84-14/84
= 5/84

5. 1/3[1/2(1/4-1/3)+1/6]
= 1/3[1/2(3/12-4/12)+1/6]
= 1/3[1/2(-1/12)+1/6]
= 1/3[-1/24+1/6]
= 1/3[-1/24+4/24]
= 1/3[3/24]
= 3/72
= 1/24

6. 14/21(2/5-1/3)+1/6
= 14/21(6/15-5/15)+1/6
= 14/21(1/15)+1/6
= 14/315+1/6
= 28/630+105/630
= 133/630
= 11 1/630

7. 1-1/1+1/2
= 1/1-1/1+1/2
= 2/2-2/2+1/2
= 1/2

8. 2+3/1+5/2
= 2/1+3/1+5/2
= 4/2+6/2+5/2
= 10/2+5/2
= 15/2
= 7 1/2