Question

2/X+10/(X+8)=(10+2)/(X+16)

Answer 1

[2(X+8)+10X]/[X(X+8)]=12/(X+16)

12X+16)(X+16)=12X(X+8)

3X^2+52X+64=3X^2+24X (两边的3X^2可以抵消)

28X=64

X=16/7