Упростите выр.
1) 2,7a * 119В 5) -3 (5x -2y) +8 (7x - 9y)
2) -5,75X * 1.3y 6) 8х-4 (16-2х)
3) 8a * (-7,9в) 7) 1,5 (8х - 6 у) -2,4 (5у -3х)
4) 1,8X * (-318y) 8) 4 (5х+2) + 10 (-2х - 3)
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