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Penjelasan:

|2x-4| = x+1

i.

2x-4= x+1

2x-x = 1+4

x= 5

ii.

2x-4= -(x+1)

2x-4= -x-1

2x+x = -1+4

3x = 3

x=3/3

x=1

pembuktian:

I.

2x-4=x+1

2×5-4 = 5+1

10-4=6

6=6 → memenuhi

ii.

2x-4 = -x-1

2×1-4 = -1-1

2-4 =-2

-2=-2 → memenuhi

maaf jika salah

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