Question

Lgi Gk Ad Waktu. Tolng Di Bantu
1.-4(3(-6+13)-2(5-8)=
2.57-(-24)-24=
3.1/5-2/3=
4.5/8+2/9=
5.2/1(2 1/3 + 1/4)=
6.1 1/5 - 2 1/3 + 2/7

Answer 1

1. -4(3(-6+13)) - 2(5-8)
=> -4(3(7)) - 2(-3)
=> -4(21) + 6
=> -84 + 6 = -78
2. 56 - (-24) - 24
=> 56 + 24 - 24 = 56
3. 1/5 - 2/3 = 3/15 - 10/15 = -7/15
4. 5/8 + 2/9 = 45/72 + 16/72 = 71/72
5. 2 / 1(2 1/3 + 1/4)
=> 2 / (7/3 + 1/4)
=> 2 / 31/4 = 8/31
6. 1 1/5 - 2 1/3 + 2/7
=> 6/5 - 7/3 + 2/7
=> 6/5 - (49/21 + 6/21)
=> 6/5 - 54/21
=> (121 - 54) / 105 = 67 / 105