1) Раскройте скобки.
а) 12•(3х-7)
б) (2х+5) •6
в) 7,5•(4х-5)
2) Раскройте скобки и упростите выражение.
а) 1,2•(5х+6) +4,8х
б) 0,4•(4х-3)-0,6х
в) 7,5•(2х+5) +1,5х-10
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