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Eight tenths equals four fifths, or 8/10 = 4/5.

If you set up the equation as x/10 = 4/5, you can cross multiply (meaning you multiply the denominator by the numerator of the fraction on the other side of the equal sign) and divide the product with the denominator. Alternatively, you may note that 5 is 1/2 of 10, or 5 x 2 = 10. So, if you were to multiply 4/5 x 2/2 so that you can alter the proportions but not the actual size of the fraction, you'd see that 'x' is 8 because 4 x 2 = 8.

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10y ago

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