b.17+35-|8-9|?
2.tentukan nilai x yang memenuhi persamaan berikut:
a.|x+5|=4
b.|2x+3|=5
c.|7-x|=2
d.|5x-2|=|x-6|
e.|5x+2|=|7-3x|
f.|5x+2|=8
penjelasan
Jawaban:
1. a. 27
b. 51
2. a. -1
b. 1
c. 5
d. -1
e. 8/5
f. 6/5
Penjelasan dengan langkah-langkah:
1. a. |32| - |-5|
32 - 5
27
b. 17 + 35 - |8 - 9|
17 + 35 - |-1|
52 - 1
51
2. a. |x + 5| = 4
x + 5 = 4
x = 4-5
x = -1
b. |2x + 3| = 5
2x + 3 = 5
2x = 5 - 3
2x = 2
x = 2/2
x = 1
c. |7 - x| = 2
|7 - x| = 2
7 - x = 2
-x = 2 - 7
-x = -5
x = 5
d. |5x - 2| = |x - 6|
5x - 2 = x - 6
5x - x = -6 + 2
4x = -4
x = -4/4
x = -1
e. |5x + 2| = |7 - 3x|
5x + 3x = 7 - 2
8x = 5
x = 8/5
f. |5x + 2| = 8
5x = 8 - 2
5x = 6
x = 6/5
[answer.2.content]
