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July 2022
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Решение систем уравнений способы подстановки . ПЛИЗ ХЕЛП
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mmb1
Verified answer
X+y=18
x/2 + y/5 = 57
x=18-y
(18-y)/2 + y/5 =57
9-y/2+y/5=57
(2y-5y)/10 = 48
-3y = 480
y=-160
x=18-(-160)=178
ответ ( 178 -160)
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Answers & Comments
Verified answer
X+y=18x/2 + y/5 = 57
x=18-y
(18-y)/2 + y/5 =57
9-y/2+y/5=57
(2y-5y)/10 = 48
-3y = 480
y=-160
x=18-(-160)=178
ответ ( 178 -160)