Question

Nilai mutlak
1. |-12+7|-5|6-12|-|8| =

2. tentukan x
a. |3x-12|=-6x
b. |1-5x|=9x

3. |x-4|=|2x-5|

4. |3x+3|>|2-4x|​

Answer 1

Penjelasan dengan langkah-langkah:

1. 5 - 30 - 8 = -33

2a. 3x - 12 = -6x

3x + 6x = 12

9x = 12

x = 4/3

-3x + 12 = -6x

-3x + 6x = -12

3x = -12

x = -4

2b. 1-5x = 9x

-5x - 9x= -1

-14x = -1

x = 1/14

-1+5x = 9x

5x - 9x = 1

-4x = 1

x = -1/4

3. x-4=2x-5

x-2x = -5+4

-x = -1

x=1

-x+4=2x-5

-x-2x = -5-4

-3x = -9

x = 3

4. 3x+3 > 2-4x

3x+4x > 2-3

7x > -1

x > -1/7

-3x-3 > 2-4x

-3x + 4x > 2+3

x > 5

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