1)(150-х):2=65
2) (300-18)*х=1410
3)5х-600=900
1)
(150-х):2=65
150-х=65*2
150-х=130
-х=130-150
-х=-20
х=20
2)
(300-18)*х=1410
282х=1410
х=1410:282
х=5
3)
5х-600=900
5х=900+600
5х=1500
х=1500:5
х=300
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Verified answer
1)
(150-х):2=65
150-х=65*2
150-х=130
-х=130-150
-х=-20
х=20
2)
(300-18)*х=1410
282х=1410
х=1410:282
х=5
3)
5х-600=900
5х=900+600
5х=1500
х=1500:5
х=300