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kristiana1523
@kristiana1523
July 2022
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Решить уравнение:
1)12с+22=82
2)2х-5=три целых и одна седьмая
3) -4х-8х+5х=-49
4)2•(7х-12)=(5+3/4х)•4
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ЮСЯ1111111
1.12с=82-22
12с=60
с=60:12
с=5
1 votes
Thanks 1
Ali1337127
1)12с+22=82
12с=82-22
12с=60
с=60÷12
с=5
2)2х-5=3 1/7
2х=5+3 1/7
2х=8 1/7
х=8 1/7÷2
х=28 1/2
3)-4х-8х+5х=-49
-7х=-49
x=-49x÷-7
х=7
4)2×(7х-12)=(5+3/4х)×4
14х-24=20+3х
14х-3х=20+24
11х=44
х=44÷11
х=4
2 votes
Thanks 1
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Answers & Comments
12с=60
с=60:12
с=5
12с=82-22
12с=60
с=60÷12
с=5
2)2х-5=3 1/7
2х=5+3 1/7
2х=8 1/7
х=8 1/7÷2
х=28 1/2
3)-4х-8х+5х=-49
-7х=-49
x=-49x÷-7
х=7
4)2×(7х-12)=(5+3/4х)×4
14х-24=20+3х
14х-3х=20+24
11х=44
х=44÷11
х=4