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Verified answer
X - 1 + x - 3 = 2x + x - 1 - 3 = 2
2x - 4 = 2
2x = 2 + 4
2x = 6
x = 6/2
x = 3
x-1+x+3=2
2x+2=2
2x=0
x=2
atau
-(x-1)+-(x+3)=2
-x+1-x-3=2
-2x-2=2
-2x=2+2
-2x=4
x=4/-2
x=-2
nilaibx yg memenuhi adalah x=2 atau x=-2