3fĆ·2+21=27
3t+8.4=5t
$x^{2}$-6x+3
18=aĆ·3-12
3(2c+7)=4c+39
3š„ā $\2{\4+2ā6}$ ā3 š„ā2 =0
y=3Lnx, la inversa
22-8x=2x+9
y=3Lnx