1) m+n+p-k
2) -x-y+z
3) -ab+ac+cd
4) -0,6a-11b+3
1) m-(-n)+p+(-k)= m+n+p+(-k)= m+n+p-k
2) -x+(-y)+(z)= -x-y+z
3) -ab-(-ac)+cd= -ab+ac+cd
4) -0,6a+(-11b)+3= -0,6a-11b+3
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Answers & Comments
1) m+n+p-k
2) -x-y+z
3) -ab+ac+cd
4) -0,6a-11b+3
1) m-(-n)+p+(-k)= m+n+p+(-k)= m+n+p-k
2) -x+(-y)+(z)= -x-y+z
3) -ab-(-ac)+cd= -ab+ac+cd
4) -0,6a+(-11b)+3= -0,6a-11b+3