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Problem #9

Evaluating fractional expressions

Compiler of the Uzbek version and author of the solutions — Zuhriddin Jaloliddinov

Hard20 pointsArithmetic operations100%
Evaluate:
0,4+8(5−0,8⋅58)−5:212(178⋅8−(8,9−2,6:23))⋅3425⋅90\dfrac{0,4+8\left(5-0,8\cdot\frac{5}{8}\right)-5:2\frac{1}{2}}{\left(1\frac{7}{8}\cdot 8-\left(8,9-2,6:\frac{2}{3}\right)\right)\cdot 34\frac{2}{5}}\cdot 90

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