Question

.......решить ................

Answer 1

а
2/a(a+b)=2b/ab(a=b)     
(3a-b)/b(a+b)=a(3a-b)/ab(a=b)
б
y/y(y+1)=1/(y+1)=(y-1)/(y²-1)
y/y(y-1)=1/(y-1)(y+1)/(y²-1)
в
(u+v)/uv(u+v)=1/uv=(u+v)/uv(u+v)
uv/u²v²(u+v)=1/uv(u+v)
г
(p+rq)/pq(r+p)=(r-q)(p+rq)/pq((r²-p²)
(pq+r)/pq(r-q)=(pq+r)(r+q)/pq(r²-q²)
д
1/n³(nm³+1)=(nm^4+1)/[n³(nm³+1)(nm^4+1)]
1/n³(nm^4+1)=(nm³+1)/[n³(nm^4+1)(nm³+1)]
е
(q=h)/(q-h)=(q+h)²/(q²-h²)
(q-h)/9q+h)=(q-h)²/(q²-h²)