Quy đồng mẫu các phân thức sau: a,5/3;5a-6/3a b,2x/3;2ax+3x/3a c,b/6a;4a+3b^2/18ab;x/9b d,x/4a;6a-5bx/20ab;a-1/10b e,5/3;5x-1/3(x+1) f,1-x/2(x+1);1/2 g,7/5;7a-31/5a-15 h,3/b-1;7-b/2b-2 i,2/3a;1/2a-2;a-4/6a^2-6a
Quy đồng mẫu các phân thức sau: a,5/3;5a-6/3a b,2x/3;2ax+3x/3a c,b/6a;4a+3b^2/18ab;x/9b d,x/4a;6a-5bx/20ab;a-1/10b e,5/3;5x-1/3(x+1) f,1-x/2(x+1);1/2 g,7/5;7a-31/5a-15 h,3/b-1;7-b/2b-2 i,2/3a;1/2a-2;a-4/6a^2-6a
Giải thích các bước giải:
\(\begin{array}{l}
a,\frac{{5a}}{{3a}},\frac{{5a – 6}}{{3a}}\\
b,\frac{{2ax}}{{3a}},\frac{{2ax + 3x}}{{3a}}\\
c,\frac{{3{b^2}}}{{18ab}},\frac{{4a + 3{b^2}}}{{18ab}},\frac{{2ax}}{{18ab}}\\
d,\frac{{5bx}}{{20ab}},\frac{{6a – 5bx}}{{20ab}},\frac{{2{a^2} – 2a}}{{20ab}}\\
e,\frac{{5x + 5}}{{3(x + 1)}},\frac{{5x – 1}}{{3(x + 1)}}
\end{array}\)