Question

[Đinh Kim Đạt 202]

bài 5: so sánh A và B, biết:

A=36x85x20/25x84x34

B=30x63x65x8/117x200x49

Answer 1

[Eihwaz]

A\(=\frac{36x85x20}{25x84x34}=\frac{2^2x3^2x5x17x2^2x5}{5^2x2^2x3x7x2x17}=\frac{6}{7}.\)

\(B=\frac{30x63x65x8}{117x200x49}=\frac{\left(2x3x5\right)\left(3^2x7\right)\left(5x13\right)2^3}{\left(3^2x13\right)\left(2^3x5^2\right)7^2}=\frac{6}{7}\)

=>A=B