5{2x-4[x-3(x+2)]}

Question

trouble with grouping symbols

Answer 1

Work from the inside out.  As you eliminate one level of grouping, adjust your other grouping symbols accordingly.

 

5{2x-4[x-3(x+2)]} =

5[2x-4(x-3x-6)] =

5[2x-4(-2x-6)] =

5(2x +8x +24) =

5(10x + 24) =

50x + 120