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-2x=43-2
-2x=41
x=41:-2
x=20,5
b) 3(x+3)+1(x-1=0)42
3x+9+1x-1=0×42
3x+1x=0×42-9+1
4x=-8
x=-8:4
x=-2
c) 2x-3+4x+4=2x+332
2x+4x-2x=332+3-4-2
4x=329
x=329:4
x=82,25
maaf kalo salah!!!!!