упростите выражения: 1 2a+612+7a+324: 2 12y+29y+781+219: 3 38 + 5a+75+6a: 4 612-212+7m+3m:плиз помогитее:*
1) 2a+612+7a+324=9а+936
2) 12y+29y+781+219=41у+1000
3) 38 + 5a+75+6a=11а+113
4) 612-212+7m+3m=400+10m
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Answers & Comments
1) 2a+612+7a+324=9а+936
2) 12y+29y+781+219=41у+1000
3) 38 + 5a+75+6a=11а+113
4) 612-212+7m+3m=400+10m