Mathematic Problems
5a-x+5a-2x-a-x+11a-x+1+3a-xa3x+1
5a-x+5a-2x-a-x+11a-x+1+3a-xa3x+1
=5ax+51a2x-1ax+11a-x+1+3a-xa3x+1
=5ax+511a2x-1ax+111ax+1+3axa3x+1
=5t+511t2-1t+111t+1+3tt3+1
=5+5tt1-t+t2t211+tt+3t1+t3t3
=5+5t1-t+t2t11+tt+31+t3t2
=5tt+1t2-t+1t1+t+3t21+t3
=5tt+1t2-t+1t1+t+3t21+tt2-t+1
=5tt+1t2-t+1tt2+2t+11+tt2-t+1
=5t2+2t+1t2+2t+1
=5
5a-x+5a-2x-a-x+11a-x+1+3a-xa3x+1=5