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Арина2001пан
@Арина2001пан
August 2022
1
6
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1) 5n+(13,4-2n)=16,4n.
2) 12-(4x+5)=7+x.
3) 5(2y-3)+11=6y.
4) -2(7-a)+10=a.
5) 5-3(2в-1)=4в-22.
6) 1,2c-7=6c-16,6.
7) 2(1,2m+5)+4=2m+0,8.
8) 1,7n-0,9=2n.
9) 9-2(x+4)=2x+3.
10) -4(2+3y)+11= -15y+17
11) 5m-12=-3m+2
12) 0,2(3n+2)=2,6n-7,6.
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jekadva
1) 5n+(13,4-2n)=16,4n
5n+13,4-2n=16,4n
13,4=16,4-5n+2n
13,4=13,4n
n=13,4:13,4
n=1
---------.
2) 12-(4x+5)=7+x.
12-4x-5=7+x
12-5-7=x+4x
0=5x
x=0
------
3) 5(2y-3)+11=6y.
10y-15+11=6y
10y-6y=15-11
4y=4
y=4:4
y=1
-----
4) -2(7-a)+10=a.
-14+2a+10=a
2a-a=14-10
a=4
--------
5) 5-3(2b-1)=4b-22.
5-6b+3=4b-22
5+3+22=4b+6b
30=10b
b=30:10
b=3
--------------
6) 1,2c-7=6c-16,6.
-7+16,6=6c-1,2c
9,6=4,8c
c=9,6:4,8
c=2
------------
-
7) 2(1,2m+5)+4=2m+0,8.
2,4m+10+4=2m+0,8
2,4m-2m=0,8-10-4
0,4m=-13,2
m=-13,2:0,4
m=-33
----------
8) 1,7n-0,9=2n.
1,7n-2n=0,9
-0,3n=0,9
n=0,9:(-0,3)
n=-3
-------------
9) 9-2(x+4)=2x+3.
9-2x-8=2x+3
-2x-2x=3-9+8
-4x=2
x=2:(-4)
x=-0,5
------------------
10) -4(2+3y)+11= -15y+17
-8-12y+11=-15y+17
-12y+15y=17+8-11
3y=14
y=14:3
y=4 2/3
--------
11) 5m-12=-3m+2
5m+3m=2+12
8m=14
m=14:8
m=1,75
------------
12) 0,2(3n+2)=2,6n-7,6.
0,6n+0,4=2,6n-7,6
0,4+7,6=2,6n-0,6n
8=2n
n=8:2
n=4
=======================================
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Report "1) 5n+(13,4-2n)=16,4n.2) 12-(4x+5)=7+x.3) 5(2y-3)+11=6y.4) -2(7-a)+10=a.5) 5-3(2..."
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Answers & Comments
5n+13,4-2n=16,4n
13,4=16,4-5n+2n
13,4=13,4n
n=13,4:13,4
n=1
---------.
2) 12-(4x+5)=7+x.
12-4x-5=7+x
12-5-7=x+4x
0=5x
x=0
------
3) 5(2y-3)+11=6y.
10y-15+11=6y
10y-6y=15-11
4y=4
y=4:4
y=1
-----
4) -2(7-a)+10=a.
-14+2a+10=a
2a-a=14-10
a=4
--------
5) 5-3(2b-1)=4b-22.
5-6b+3=4b-22
5+3+22=4b+6b
30=10b
b=30:10
b=3
--------------
6) 1,2c-7=6c-16,6.
-7+16,6=6c-1,2c
9,6=4,8c
c=9,6:4,8
c=2
------------
-
7) 2(1,2m+5)+4=2m+0,8.
2,4m+10+4=2m+0,8
2,4m-2m=0,8-10-4
0,4m=-13,2
m=-13,2:0,4
m=-33
----------
8) 1,7n-0,9=2n.
1,7n-2n=0,9
-0,3n=0,9
n=0,9:(-0,3)
n=-3
-------------
9) 9-2(x+4)=2x+3.
9-2x-8=2x+3
-2x-2x=3-9+8
-4x=2
x=2:(-4)
x=-0,5
------------------
10) -4(2+3y)+11= -15y+17
-8-12y+11=-15y+17
-12y+15y=17+8-11
3y=14
y=14:3
y=4 2/3
--------
11) 5m-12=-3m+2
5m+3m=2+12
8m=14
m=14:8
m=1,75
------------
12) 0,2(3n+2)=2,6n-7,6.
0,6n+0,4=2,6n-7,6
0,4+7,6=2,6n-0,6n
8=2n
n=8:2
n=4
=======================================