Упростите: 1)7х-5-4(2х-9)=
2)5(х-3)-(6х-11)=
3)х-7-3(2х-8)=
4)6(2х+3)-4(7х-20)=
5)5(3х-3у+3)-6(3х-у-4)+3(х+у+1)=
6)25(2х-4у+7)-6(5х-11у+3)-2(10х-17у-4)=
2)5(х-3)-(6х-11)=
3)х-7-3(2х-8)=
4)6(2х+3)-4(7х-20)=
5)5(3х-3у+3)-6(3х-у-4)+3(х+у+1)=
6)25(2х-4у+7)-6(5х-11у+3)-2(10х-17у-4)=
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