Срочно!Упростите выражение:
1).4(3a +1.6)-(5-+2a)-3(a-1.2)
2).-1.5(6-x)-2(-x-3)+0.9(5x-1)
3).0.8(2y-3)+5(1.6-0.5y)-2(0.8y-1.7)
4).5/6(1/5n+6)-2/3(9-1/2n)+5/8(4/5n-8)
1).4(3a +1.6)-(5-+2a)-3(a-1.2)
2).-1.5(6-x)-2(-x-3)+0.9(5x-1)
3).0.8(2y-3)+5(1.6-0.5y)-2(0.8y-1.7)
4).5/6(1/5n+6)-2/3(9-1/2n)+5/8(4/5n-8)
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Answers & Comments
2)-9+1,5х+2х+6+4,5х-0,9= 8х-3,9
3) 1,6у-2,4+8-2,5у-1,6у+3,4= -2,5у+9
4)1/6п+1-6+1/3п+1/2п-5= п-10