Помогите пожалуйста 1261,1262. Created by bibosh. matematika-ru

Помогите пожалуйста 1261,1262...

Элиночка25 1261 - 7+6+5+4+3+2+1=28
1262 - 3(х+5)+4х=3х+15+4х=7х+15
8(7+х)-3х=56+8х-3х=56+5х
9(х-7)+6х=9х-63+6х=15х-63
5(х+8)-11=5х+40-11=5х+29
2(13+х)-15=26+2х-15=11+2х
6(х+5)+2х=6х+30+2х=8х+30

1 votes Thanks 1

nata0111 1261-28
1262
1)3(х+5)+4х=3х+15+4х=7х+15
2)8(7+х)-3х=56+8х-3х=5х+56
3)9(х-7)+6х=9х-63+6х=15х-63
4)5(х+8)-11=5х+40-11=5х+29
5)2(13+х)-15=26+2х-15=2х+11
6)6(х+5)+2х=6х+30+2х=8х+30

1 votes Thanks 1

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