Răspuns :
a+b=457
a:b=9r7
a=b×9+7
a=9b+7
Apoi inlocuiesti in suma si iese 9b+7+b=457
10b+7 = 457
10b= 457-7=>10b=450
b=45
a=45×9+7
a=405+7
a=412
Asta este!
a:b=9r7
a=b×9+7
a=9b+7
Apoi inlocuiesti in suma si iese 9b+7+b=457
10b+7 = 457
10b= 457-7=>10b=450
b=45
a=45×9+7
a=405+7
a=412
Asta este!
a+b=457
a:b=9 rest 7
a= 9 segmente+7
b=1 segment
457-7=450
450:10=45
b=45
a=45x9 + 7
Probă: a+b =457
412+45=457
a:b=9 rest 7
a= 9 segmente+7
b=1 segment
457-7=450
450:10=45
b=45
a=45x9 + 7
Probă: a+b =457
412+45=457