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June 2022
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решите систему уравнений номер 5
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pyzan197545228
40х+3у=-10
20х-7у=-5 | *(-2)
40х+3у=-10
-40х+14у=10
+ -------------------
17y = 0
y= 0
20x = -5
x = -1/4
2 votes
Thanks 1
switlana26
40x+3y=-11
20x-7y=-5|*-2
40x+3y=-11
-40x+14y=-10
17y=-21
y=21\17
y=1,27
40x+3*1,27=-11
40x+3,81=-11
40x=-11-3,81
40x=-14,81
x=-14,81\40
x=-0,37
0 votes
Thanks 1
NewPassword
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Answers & Comments
20х-7у=-5 | *(-2)
40х+3у=-10
-40х+14у=10
+ -------------------
17y = 0
y= 0
20x = -5
x = -1/4
20x-7y=-5|*-2
40x+3y=-11
-40x+14y=-10
17y=-21
y=21\17
y=1,27
40x+3*1,27=-11
40x+3,81=-11
40x=-11-3,81
40x=-14,81
x=-14,81\40
x=-0,37