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hYsobe
@hYsobe
October 2021
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YaEK1999
1) 7х-7=3х;
4х=7;
х=7/4;
х=1,75.
2) 9х+56=-х;
10х=-56;
х=-5,6.
3)5х-15=4х;
х=15.
4)4х+24=х;
3х=-24;
х=-8.
5)-х=24+4х;
5х=-24;
х=-4 целых 4/5.
6)-21+14х=-6х-1;
20х=20;
х=1.
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galina200
7(x-1)=3x
7x-7=3x
7x-3x=7
4x=7
x=1,75
9(x+7)=-x
9x+63=-x
9x+x=63
10x=63
x=6,3
5(x-3)=4x
5x-15=4x
5x-4x=15
x=15
4(x+6)=x
4x+24=x
4x-x=24
3x=24
x=8
-x=4(6+x)
-x=24+4x
-x-4x=24
-5x=24
x=-4,8
7(-3+2x)=-6x-1
-21+14x=-6x-1
14x+6x=21-1
20x=20
x=1
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Answers & Comments
4х=7;
х=7/4;
х=1,75.
2) 9х+56=-х;
10х=-56;
х=-5,6.
3)5х-15=4х;
х=15.
4)4х+24=х;
3х=-24;
х=-8.
5)-х=24+4х;
5х=-24;
х=-4 целых 4/5.
6)-21+14х=-6х-1;
20х=20;
х=1.
7x-7=3x
7x-3x=7
4x=7
x=1,75
9(x+7)=-x
9x+63=-x
9x+x=63
10x=63
x=6,3
5(x-3)=4x
5x-15=4x
5x-4x=15
x=15
4(x+6)=x
4x+24=x
4x-x=24
3x=24
x=8
-x=4(6+x)
-x=24+4x
-x-4x=24
-5x=24
x=-4,8
7(-3+2x)=-6x-1
-21+14x=-6x-1
14x+6x=21-1
20x=20
x=1