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lt12345
@lt12345
July 2022
2
19
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x+49=7*9 , x-49=7*9 , 640-x=180+120 ,x-640=180+120
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teterinna
Х+49=7*9 х-49=7*9 640-х=180+120 х-640=180+120
х+49=63 х-49=63 640-х=300 х-640=300
х=63-49 х=63+49 х=640-300 х=640+300
х=14 х=112 х=340 х=940
2 votes
Thanks 2
Аленка000091
Х+49=7*9
Х+49=63
Х=63-49
Х=14
14+49=7*9
Х-49=7*9
Х-49=63
Х=63+49
Х=112
112-49=7*9
640-х=180+120
640-х=300
Х=640-300
Х=340
640-340=180+120
Х-640=180+120
Х-640=300
Х=640+300
Х=940
940-640=180+120
2 votes
Thanks 9
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Answers & Comments
х+49=63 х-49=63 640-х=300 х-640=300
х=63-49 х=63+49 х=640-300 х=640+300
х=14 х=112 х=340 х=940
Х+49=63
Х=63-49
Х=14
14+49=7*9
Х-49=7*9
Х-49=63
Х=63+49
Х=112
112-49=7*9
640-х=180+120
640-х=300
Х=640-300
Х=340
640-340=180+120
Х-640=180+120
Х-640=300
Х=640+300
Х=940
940-640=180+120