what is 3.5(1.4x-7.8y) - 2.9(4,6y - 3.1x) + 8y?

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simplify the following:  3.5(1.4x - 7.8y) - 2.9(4.6y -3.1x) + 8y?
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1 Answer

Expand the brackets: 4.9x-27.3y-13.34y+8.99x+8y=x(4.9+8.99)-y(27.3+13.34-8)=13.89x-32.64y=3(4.63x-10.88y).

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