откройте скобки и решите:
-3a+14-(5-2a)
c(5-a-x)
3(-3a+6b)
4(3m-n) - 3(4m+2n)
a+(2b-b-a+1)
2h-(a+b-3a-2)
-3a+14-(5-2a)
c(5-a-x)
3(-3a+6b)
4(3m-n) - 3(4m+2n)
a+(2b-b-a+1)
2h-(a+b-3a-2)
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Answers & Comments
-3a+14-(5-2a) = -3a + 14 - 5 + 2a = -a + 9
c(5-a-x) = 5c - ac - cx
3(-3a+6b) = -9a + 18b
4(3m-n) - 3(4m+2n) = 12m - 4n - 12m - 6n = -10n
a+(2b-b-a+1) = a + 2b - b - a + 1 = b + 1
2h-(a+b-3a-2) = 2h - a - b + 3a + 2 = 2a + 2h + 2