упростите выражение
1. 11-2(6-5z)+9z-1
2. -10(5а-14+2в)-(а+в)
3. 11х-(2х-(х+6))
4. 6р-(3n-((р-13n)+6р))
1. 11-2(6-5z)+9z-1
2. -10(5а-14+2в)-(а+в)
3. 11х-(2х-(х+6))
4. 6р-(3n-((р-13n)+6р))
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Answers & Comments
2) -10 (5a-14+2b)-(a+b)=-50a+140-20b-a-b=-51a+140-21b
3) 11×-(2×-(×+6))=11×-(2×-×-6)=11×-×+6=10×+6
4) 6p-(3n-((p-13n)+6p))=6p-(3n -(p-13n+6p))=6p-(3n-(-13n+7p))=6p-(3n+13n-7p)=6p-16n+7p=13p-16n