Автор - Юльчикс5646

a) 3-17a-11(2a-3)

b) 16+3(2-3y)+8y

c) a-(a-(2a-4))

d) 4y-(3y-(2y-(y+1)))

Ответ

Автор - missDi8
A) 3-17a-11(2a-3) = 3 - 17а - 22а + 33 = 36 - 39а

b) 16+3(2-3y)+8y = 16 + 6 - 9у + 8у = 22 - у

c) a-(a-(2a-4)) = а - (а - 2а + 4) = а - а + 2а - 4 = 2а - 4

d) 4y-(3y-(2y-(y+1))) = 4у - (3у - (2у - у - 1)) = 4у - (3у - у + 1) = 2у - 1

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