Реши задачу

1. \(2(-5x+2-2x)=-14x+4\)

2. \(-0{,}2(-4t+8c-c)=0{,}8t-1{,}4c\)

3. \(1{,}5x(-n-n+2y)=3xy-3xn\)

4. \((2b-3+b)(-3)=-9b+9\)

5. \((-2k+5k-1)(-0{,}1)=-0{,}3k+0{,}1\)

8.1) \(2(x+2)-8x+3=-6x+7\)