№485 срочно и заранее спасибо. Created by lyubayarovaya. matematika-ru

№485 срочно и заранее спасибо...

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3(х + 5) +4х = 3х + 15 + 4х = 7х + 15
8(х + 7) - 3х = 8х + 56 - 3х = 5х + 56
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 = 2х + 11
6(х + 5) + 2х = 6х + 30 + 2х = 8х + 30

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hlopushinairina 1)3·(x+5)+4x=3x+15+4x=7x+15;
2)8·(7+x)-3x=56+8x-3x=56+5x;
3)9·(x-7)+6x=9x-63+6x=15x-63;
4)5·(x+8)-11=5x+40-11=5x+29;
5)2·(13+x)-15=26+2x-15=2x+11;
6)6·(x+5)+2x=6x+30+2x=8x+30;

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