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foggydreamer
@foggydreamer
August 2022
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решите уравнение:
1) -7(2 - 3х) = 56
2) (5 + 7а) • 15 = -30
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Blackkingbarezwin
1)-14+21x=56
21x=56+14
21x=70
x=3,3
2)75+105a=-30
105a=-30-75
105a=-105
a=-1
0 votes
Thanks 2
Rosa5
1) -7(2 - 3х) = 56;
-14 +21х=56;
21х=56+14
21х=70
х=70:21
х= 3 1/3
2) (5 + 7а) • 15 = -30;
75 + 105 а= -30
105 а= -30-75
105а=-105
а=-1
0 votes
Thanks 2
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Answers & Comments
21x=56+14
21x=70
x=3,3
2)75+105a=-30
105a=-30-75
105a=-105
a=-1
-14 +21х=56;
21х=56+14
21х=70
х=70:21
х= 3 1/3
2) (5 + 7а) • 15 = -30;
75 + 105 а= -30
105 а= -30-75
105а=-105
а=-1