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Jennin
@Jennin
June 2022
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Решите уравнение 3-(2х+1)=5
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Dok10102003
Решение:
2х-5,5=3(2х-1,5)
3(2х-1,5)=2х-5,5
6х-4,5=2х-5,5
6х-2х=4,5-5,5
2х=-1
х=-1/2=-0,5
Ответ: х=-0,5
2 votes
Thanks 1
Dok10102003
Решение:
2х-5,5=3(2х-1,5)
2х-5,5=6х-4,5
4,5-5,5=6х-2х
-1=4х, х=-1/4=-0,25
Dok10102003
я думаю так
Dok10102003
а) 2х +3
_____ - 8 =0
5
б) 4х - 3 2х +1
____ = ______
5 2
в) х + 2 4х - 3 5 - х
-------- + ---------- - ------- = 1
3 2 6
г) х + 1 х - 4 2х - 1
3 - --------- - --------- + --------- = 0
5 2 10
а)(2х+3)\5-8=0
(2х+3)\5=8
2х+3=8*5
2х+3=40
2х=40-3
Maximus163RUS
3-2x-1=5
Dok10102003
(х2-1)/3=(2х-1)/5 +2
Общий знаменатель 15.
5(х2-1)/15 = 3(2х-1)/15 +2*15/15
5(х2-1) = 3(2х-1) +2*15
5х2 -5 = 6х -3 + 30
5х2 - 6х -32 = 0
х=-2 х= 16/5
sgrechuxa
-6x-3=5
-6x=5-3
-6x=2
x= -3
1 votes
Thanks 1
Dok10102003
1) 2х = 45; 2) 10 —х = 10 000; 3) 2—х = 1/8
4) 10х = 0,001; 5) 8— 1/х = 1/4 ; 6) 2х+2 = 64.
2143. 1) ( 3/5 )х = 5/3; 2) ( 2/3 )2х = 9/4; 3) (0,16)х = 5/2
4) ( 2/3 )0,2х =3 3/8; 5) (0,75)х+1 = 16/9 6) 4— 5х = ( 1/8 )х+15.
2144. 1) √5х = 25; 2) 3√aх = √a2х+1 3) х+1√a = х√a2
4) b √bх = 3√b2 ; 5) 3х = х√3 ; 6) √8х = х√32.
2152. Реш
Maximus163RUS
ВОТ!!!! 3-(2х+1)=5
3-2x-1=5
-2x-1=5-3
-2x-1=2
-2x=2+1
-2x=3
2x=-3
x=-3/2
x=-1.5
Maximus163RUS
неужели это так сложно
Maximus163RUS
ппц
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Answers & Comments
2х-5,5=3(2х-1,5)
3(2х-1,5)=2х-5,5
6х-4,5=2х-5,5
6х-2х=4,5-5,5
2х=-1
х=-1/2=-0,5
Ответ: х=-0,5
2х-5,5=3(2х-1,5)
2х-5,5=6х-4,5
4,5-5,5=6х-2х
-1=4х, х=-1/4=-0,25
_____ - 8 =0
5
б) 4х - 3 2х +1
____ = ______
5 2
в) х + 2 4х - 3 5 - х
-------- + ---------- - ------- = 1
3 2 6
г) х + 1 х - 4 2х - 1
3 - --------- - --------- + --------- = 0
5 2 10
а)(2х+3)\5-8=0
(2х+3)\5=8
2х+3=8*5
2х+3=40
2х=40-3
Общий знаменатель 15.
5(х2-1)/15 = 3(2х-1)/15 +2*15/15
5(х2-1) = 3(2х-1) +2*15
5х2 -5 = 6х -3 + 30
5х2 - 6х -32 = 0
х=-2 х= 16/5
-6x=5-3
-6x=2
x= -3
4) 10х = 0,001; 5) 8— 1/х = 1/4 ; 6) 2х+2 = 64.
2143. 1) ( 3/5 )х = 5/3; 2) ( 2/3 )2х = 9/4; 3) (0,16)х = 5/2
4) ( 2/3 )0,2х =3 3/8; 5) (0,75)х+1 = 16/9 6) 4— 5х = ( 1/8 )х+15.
2144. 1) √5х = 25; 2) 3√aх = √a2х+1 3) х+1√a = х√a2
4) b √bх = 3√b2 ; 5) 3х = х√3 ; 6) √8х = х√32.
2152. Реш
3-2x-1=5
-2x-1=5-3
-2x-1=2
-2x=2+1
-2x=3
2x=-3
x=-3/2
x=-1.5