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b) x =298+80 --> x=378
c) x=-16-5 --> x= -21
d) x= -7+3 --> x= -4
e) x=8/2 --> x=4
f) x=-27/3 --> x=-9
g)-x=100/5 --> x =-20
h) -x= -120/6 --> -x=-20 --> x=20
i) x=12+8/4 x--> 5
j) x=181-1/9 --> x=20
k) -x=20+2/2 --> x=-11
l) -x=8+1 --> x= -9
x=308-2
x=306
b)x-80=298
x=298+80
x=378
c)x+5=-16
x=-16-5
x=-21
d)x-3=7
x=7+3
x=10
e)2x=8
x=8/2
x=4
f)3x=-27
x=27/3
x=9
g)-5x=100
x=100/-5
x=-20
h)-6x=-120
x=-120/-6
x=20
i)4x-8=12
4x=12+8
x=20/4
x=5
j)9x+1=181
9x=181-1
x=180/9
x=20
k)-2x-2=20
-2x=20+2
x=22/-2
x=-11
l)-x-1=8
-x=8+1
-x=9
x=-9
listo pd:esta sin simplificar