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b)1+x
c)-2,5-2a
d)-10
e)-7-2k+6m
f) x = -2
g)-x +3y
h)-9y
a)-12x+-6y
b)1x+1
c)-2a+3
d)k-16
e)-2k+6m-7
f)5x-2
g)-1x-9y
h)-9y-10
a)-5x+4y-y-7x-9y = -12x-6y
b)4x+5-x-4+x-3x = x+1
c)0,5a-2a+9-0,5a-11,5 = -2a-2,5
d)-14k+9k-13+k+3+4k = 0*k-10 = -10
e)-3k+2m+5m-7+k-m = -2k+6m-7
f)2x-4=3x-2
2x-3x-4+2 = -x-2
g)x-3y-2x+6y = -x+3y
h)2y-5-3y-4-8y+9 = -9y