[tex]1.2 + 0.3y = 0.325y + 0.7 \\ 1.2 + 0.3y - 0.325 = 0.7 \\ 0.3y - 0.325y = 0.7 - 1.2 \\ - 0.025y = 0.7 - 1.2 \\ - 0.025y = - 0.5 \\ y = 20[/tex]
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[tex]1.2 + 0.3y = 0.325y + 0.7 \\ 1.2 + 0.3y - 0.325 = 0.7 \\ 0.3y - 0.325y = 0.7 - 1.2 \\ - 0.025y = 0.7 - 1.2 \\ - 0.025y = - 0.5 \\ y = 20[/tex]
Покрокове пояснення:
0,3у-0,325у=0,7-1,2
-0,025у=-0,5
у=-0,5:(-0,025)
у=20