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kkumshelova14
@kkumshelova14
July 2022
2
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Алгебра:
1.вычислите: 3/4*(1.3-0.9)
2. Найдите корень уравнения 3(х-1)=х+3
3.найдите значение выражения :2(а+1)-2 при а=3 целых 1/2
заранее спасибо
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Answers & Comments
juleeekk
1. 3/4*(1.3-0,9)=3/4*0,4=0,75*4=3
2.3(х-1)=х+3
3х-3=х+3
2х=3+3
2х=6
х=3
3.2(а+1)-2=2а+2-2=2а
при а= 3 1/2, то 2а=7
2 votes
Thanks 3
kkumshelova14
спасибо большое
Artemon228000
1. 3/4*(1.3-0,9)=3/4*0,4=0,75*4=3
2.3(х-1)=х+3
3х-3=х+3
2х=3+3
2х=6
х=3
3.2(а+1)-2=2а+2-2=2а
при а= 3 1/2, то 2а=7
0 votes
Thanks 0
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Answers & Comments
2.3(х-1)=х+3
3х-3=х+3
2х=3+3
2х=6
х=3
3.2(а+1)-2=2а+2-2=2а
при а= 3 1/2, то 2а=7
2.3(х-1)=х+3
3х-3=х+3
2х=3+3
2х=6
х=3
3.2(а+1)-2=2а+2-2=2а
при а= 3 1/2, то 2а=7