Question

resuelve las ecuaciones:
5.(x-3)=4(x+4)

3.(3-x)-9=2.(x+4)+6

-3(x-1)+4=6(x-1)-5

3(4+x)=5(x+4)+1=3x

7x-4(2x-1)+7=-2(1-2x)+3

Answer 1

5(x-3)=4(x+4)
5x-15=4x+16
5x-4x=16+15
x=31
...................................................
3(3-x)-9=2(x+4)+6
9-3x-9=2x+8+6
-3x=2x+14
-3x-2x=14
-5x=14
x= -14/5
................................................
-3(x-1)+4=6(x-1)-5
-3x+3+4=6x-6-5
-3x+7=6x-11
-3x-6x=-11-7
-9x=-18
x=-18/-9
x=2
.............................................
3(4+x)=5(x+4)+1=3x

.........................................
7x-4(2x-1)+7=-2(1-2x)+3
7x-8x+4+7=-2+4x+3
-x+11=4x+1
-x-4x=1-11
-5x=-10
x=-10/-5
x=2