решите уравнение б)2/11x+5/14=0.45x+1.2 в)2/35-2.9x=0.8-3/14

2/11х+5/14=0,45х+1,2
2/11+9/20х=1,2-5/14
139/220х=1 13/30
х= 2 112/417


2/35-2.9x=0.8-3/14
-2,9х = 4/5 - 3/14 + 2/35
-2,9х= 9/14
-х=45/203
х= - 45/203