8p-8=2p-164
0.0001/0.01+0.2/0.005+0.09/0.1
a^{2} - 130a + 16 = 0
10+6*4-3
220+x+x-90+x=1390
186/1.24
220+x+90-x+x=1390
42/7+3*9
2 $x^{1}$ x 3 $x^{1}$
2 $a^{1}$ x 3 $a^{1}$
