isaevaelenka а) -(-б + 1,2)+ 3,2=б-1,2+3,2=б+2
6) (-2.8+n)-n= - 2,8+п-п= - 2,8
3)(4.3-y)-(5.8+y)=4,3-у-5,8-у= - 2у-1,5

93931 А) -(-б+1,2)+3,2 = б-1,2+3,2 = б+2.
6)(-2.8+n)-n = -2,8+n-n = -2,8.
3)(4.3-y)-(5.8+y) = 4,3-y-5,8-y = -1,5-2y.