С×7=490 х×6=420 490÷а=70 630÷х=7 х÷7=70 х÷10=60

Question

С×7=490 х×6=420 490÷а=70 630÷х=7 х÷7=70 х÷10=60

Answer 1

C=490÷7
c = 70
70×7=490
490=490

x=420÷6
x=60
60×6=420
420=420

Answer 2

С×7=490 с=490÷7 с=70
х×6=420 х=420÷6 х=70
490÷а=70 а=490÷70 а=70
630÷х=7 х=630÷7 х=90
х÷7=70 х=70×7 х=490
х÷10=60 х=60×10 х=600