0.6(-2y+3)-0.4(9-y)=-0.3(y-9)помогите решить уравнение...

sisterssuper @sisterssuper

July 2022 1 2 Report

0.6(-2y+3)-0.4(9-y)=-0.3(y-9)помогите решить уравнение

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0.6(-2y+3)-0.4(9-y)=-0.3(y-9)
-1.2y+1.8-3.6+0.4y=-0.3y+2.7
-0.8y-1.8=-0.3y+2.7
-0.8y+0.3y=2.7+1.8
-0.5y=4.5
y=4.5/(-0.5)
y=-9

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