1)5(x-4) 2)9-7(x+3)-(5-6x) 3)(7x+9)-(11-7) 4)5(x-2)+4(x+3 5)-(x-7)+2(x-4

Question

1)5(x-4)
2)9-7(x+3)-(5-6x)
3)(7x+9)-(11-7)
4)5(x-2)+4(x+3
5)-(x-7)+2(x-4

Answer 1

1)5(x-4)=5х-20
2)9-7(x+3)-(5-6x)= 9-7х-21-5-6х=-17-х или -(17+х)
3)(7x+9)-(11-7)=7х+9-11+7=7х +5
4)5(x-2)+4(x+3)=5х-10+4х +12=9х+2
5)-(x-7)+2(x-4)=-х+7+2х-8=х-1

Answer 2

1) 5(x-4)
    5x-20=0
    5x=20
    x=20/5
    x=4
2)9-7(x+3)-(5-6x)
   9-7x+21+5-6x
   35-x=0
   -x+35=0    (-1)
   x-35=0
   x=35