Tìm x : a, x/15 + 7/20 = 73/60. b, x + 1/3 = 25/-5. c, 11/8 + 13/6 = 85/x. d, -7/x + 8/15 = -1/20.
Tìm x
a,x/15+7/20=73/60. b,x+1/3=25/-5. c,11/8+13/6=85/x
d,-7/x+8/15=-1/20. e,x+(-2)/5=12/-15. f,x-1/-5=12/20
g,7/12+x/15=1/20. k,x-2/3=x+1/4. m,6/x-3=9/2x-7
n,-7/x+1=6/x+27. p,3/x-5=-4/x+2
(hơi dài,giúp tớ với ạ)