How much is four quarters minus one sixth? How much is three quarters plus three tenths?

Four out of fifteen minus one out of six
=(8-5)/30
=3/30
=1/10
Three quarters plus three tenths see three quarters
=3/4-3/4+3/10
=3/10

If the number a is greater than 0, then a multiplied by 4 / 3 and a plus 4 / 3 compare the size

When a is greater than 4, a times 4 / 3 is greater than a plus 4 / 3
A is equal to 4
When a is less than 4, a times 4 / 3 is less than a plus 4 / 3

Judgment: the sum of a number plus 1 must be greater than the product of the number multiplied by 1

If the number is positive, such as 1, then 1 + 1 = 2, 1 * 1 = 12 ＞ 1. If the number is negative, such as - 1, then - 1 + 1 = 0, - 1 * 1 = - 10 ＞ - 1. If the number is 0, then 0 + 1 = 10 * 1 = 0, 1 ＞ 0. Similarly, we can solve this problem with the idea of equation: let the number be

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