Answers

2014-08-10T13:12:38+08:00
-2(x-1)+7=3(x+5)
= -2x+2+7 =3x+15
= -2x+9= 3x+15
-5x = 6    >      x=  -6/5

5/16x+3/8=21+x         multiply the whole equation by LCM 16
5x +6= 336+16x
-11x =330
x -30








-
0