25x+13x×18=476 846: (7x-23)=18 (x+453)-562=2438 1346-(937-x)=654 решите

1)25х+13х×18=476
25х+234х=476
259х=476
х=476÷259
х=1,84
2)846÷(7х-23)=18
846=18×(7х-23)
846=126х-414
846+414=126х
1260=126х
1260÷126=х
10=х
3)(х+453)-562=2438
х=2438-453+562
х=2547
4)1346-(937-х)=654
1346-937+х=654
х=654-1346+937
х=245