Пошаговое объяснение:
2(5x-4y)-3(4x-y)=10x-8y-12x-3y=-2x-11y.
-2*(-5) - 11 * 0.8 = 10 - 8.8 = 1.2
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Пошаговое объяснение:
2(5x-4y)-3(4x-y)=10x-8y-12x-3y=-2x-11y.
-2*(-5) - 11 * 0.8 = 10 - 8.8 = 1.2