7 / 8-7 / 15 * 7 / 8 = () (simple calculation by operation law)

7 / 8-7 / 15 * 7 / 8 = () (simple calculation by operation law)

7/8 - 7/15 ×7/8
= 1×7/8 - 7/15 × 7/8
= （1 - 7/15 ）×7/8
= 8/15 ×7/8
= 7/15

Simple calculation of 16.2 × 101-16.2

16.2×101-16.2
=16.2x（100+1）-16.2
=16.2x100+16.2-16.2
=1620

Simple calculation of 34 * 101-34

34*101-34
=34x(101-1)
=34x100
=3400

It is known that a divided by 1 / 4 = B divided by 1 / 3 = C * 1 / 5, and that a, B and C are all greater than 1. Arrange a, B and C in order from large to small

First of all, is that * multiplication or power? If it is multiplication, the solution is as follows: A / (1 / 4) = 4A, B / (1 / 3) = 3b, c * (1 / 5) = C / 5. If a, B and C are all greater than 1, 4A = 3b, so AA