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a)6x+4x+5x= 15x
b)2a+5a-3a= 4a
c)3b+2b-5b= 0
d)3b+8b= 11b
e)17x-9x= 8x
f)4y+(-3y)= y
g)8z-15z= -7z
h)6x-2x+1½x= 5,5x
i)5t-7t-(-2,5t)= 0,5t
b)2a+5a-3a=4a
c)3b+2b-5b=0
d)3b+8b=11b
e)17x-9x=8x
f)4y+(-3y)=y
g)8z-15z=-7z
h)6x-2x+1½x=5½x
i)5t-7t-(-2,5t)=½t