Carilah Nilai Mutlak dari ​

Jawab:

a. 0

b. 40

Pembahasan Soal:

Soal:

a. |-15| + |-10| – |-25| = …

b. |5 – 10 – 25| + |7 – 15 – 2| = …

Jawab:

|x| = x, jika x ≥ 0

|x| = -x, jika x < 0

a.

|-15| + |-10| – |-25|

-(-15) + -(-10) – -(-25)

15 + 10 – 25

25 – 25

0

b.

|5 – 10 – 25| + |7 – 15 – 2|

|-5 – 25| + |-8 – 2|

|-30| + |-10|

-(-30) + -(-10)

30 + 10

40

Kesimpulan:

Jadi, hasil dari:

a. |-15| + |-10| – |-25| = 0

b. |5 – 10 – 25| + |7 – 15 – 2| = 40

~Nilai Mutlak

______________

» Penyelesaian

Nilai mutlak selalu bernilai positif

Maka:

Soal Pertama

➞ | – 15 | + | – 10 | – | – 25 |

➞ 15 + 10 – 25

➞ 25 – 25

➞ 0

Soal Kedua

➞ | 5 – 10 – 25 | + | 7 – 15 – 2 |

➞ | – 5 – 25 | + | – 8 – 2 |

➞ | – 30 | + | – 10 |

➞ 30 + 10

➞ 40