Question

find 3/7 + [-6/21] + [-8/21] + 5/2​

Answer 1

Answer:

answer is in the attachment above.

Step-by-step explanation:

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Answer 2

Answer:

$\frac{3}{7} + [\frac{-6}{21}]$

Lcm of 7,21 = 21

$\frac{3}{7} *\frac{3}{3} =\frac{9}{21}$

$\frac{-6}{21} *\frac{1}{1} =\frac{-6}{21}$

$\frac{9 + (-6)}{21} = \frac{3}{21}$

$\frac{3}{21} +\frac{-8}{21}$

$\frac{3+(-8)}{21} = \frac{-5}{21}$

$\frac{-5}{21} + \frac{5}{2}$

Lcm of 21,2 = 42

$\frac{-5}{21} *\frac{2}{2} =\frac{-10}{42}$

$\frac{5}{2} * \frac{12}{12} =\frac{60}{42}$

$\frac{-10+60}{42}$ = $\frac{50}{42}$

now we will simplify the fraction $\frac{50}{42}$

$\frac{50}{42}$ ÷ $\frac{2}{2}$ = $\frac{25}{12}$

now we will convert it in mixed fraction

$\frac{25}{12} = 2\frac{1}{12}$

hope it helps

Step-by-step explanation: