Question

5 (x-3)+2x=4-(x-9) , 9 (2x+4)+3 (6x-4)=0 , -8-3 (x+7)+3=4 (8x-1)-2

Answer 1

1)5(x-3)+2x=4-(x-9)
   5x-15+2x=4x-13
   5x+2x-4x=15-13
   3x=2/:3
   x=2/3 sau x=0,66
2)9(2x+4)+3(6x-4)=0
   18x+36+18x-12=0
   18x+18x=-36+12+0
   36x=-24/:36
   x=-24/36
3)-8-3(x+7)+3=4(8x-1)-2
   -16(x+7)+3=32x+4-2
    -16x-9+3=32x+4-2
    -9+3-4+2=16x+32x
    -8=42x=>42x=8/:42=>x=8/42