Question

Simplify, 0.144÷1.2/0.016÷0.02 + 7/5 - 21/8

Answer 1

your answer is -1.075

Answer 2

$\frac{-43}{40}$ or -1.075

Step-by-step explanation:

Given,

$\frac{0.144 / 1.2}{0.016 / 0.02} + \frac{7}{5} - \frac{21}{8}$

$\frac{0.144 * 0.02}{1.2 * 0.016} + \frac{7}{5} - \frac{21}{8}$

$\frac{144 * 0.2}{12 * 16} + \frac{7}{5} - \frac{21}{8}$

$\frac{3}{20} + \frac{7}{5} - \frac{21}{8}$

The L.C.M. of 20, 5 and 8 will be 40.

$\frac{(3 * 2) + (7*8) - (21*5)}{40}$

$\frac{6+56-105}{40}$

$\frac{62-105}{40}$

$\frac{-43}{40}$ or -1.075

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