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mainray1792
03.07.2019 •
Mathematics
Someone answer this plz! : (-8/9) x 5/6 = ?
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Ответ:
20/27
step-by-step explanation:
1 simplify brackets
-\frac{8}{9}\times \frac{5}{6}−
9
8
×
6
5
2 use this rule: \frac{a}{b}\times \frac{c}{d}=\frac{ac}{bd}
b
a
×
d
c
=
bd
ac
-\frac{8\times 5}{9\times 6}−
9×6
8×5
3 simplify 8\times 58×5 to 4040
-\frac{40}{9\times 6}−
9×6
40
4 simplify 9\times 69×6 to 5454
-\frac{40}{54}−
54
40
5 simplify \frac{40}{54}
54
40
to \frac{20}{27}
27
20
Ответ:
Step-by-step explanation:hey actlly the answer is 7/24..but best is b thn...b is tangent theta..but cot theta is is its reciprocal which is 7/24