1) Х × 60 = 6 907 + 43 493
Х × 60 = 50 400
Х = 50 400 ÷ 60
Х = 840
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840 × 60 = 6 907 + 43 493
50 400 = 50 400
2) 40 450 ÷ Х = 7 621 - 7 571
40 450 ÷ Х = 50
Х = 40 450 ÷ 50
Х = 809
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40 450 ÷ 809 = 7 621 -7 571
50 = 50