6 5/8 *3 3/5- 4 7/8* 3 3/5. Created by GastaXx. matematika-ru

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Verified answer

6⁵/₈×3³/₅- 4⁷/₈×3³/₅=6,3
6⁵/₈×3³/₅=⁵³/₈×¹⁸/₅=⁵³ˣ¹⁸/₈ₓ₅=⁵³ˣ⁹/₄ₓ₅=⁴⁷⁷/₂₀=23,85
4⁷/₈×3³/₅=³⁹/₈×¹⁸/₅=³⁹ˣ¹⁸/₈ₓ₅=³⁹ˣ⁹/₄ₓ₅=³⁵¹/₂₀=17,55
23,85-17,55=6,3

Рациональный способ решения
6⁵/₈×3³/₅- 4⁷/₈×3³/₅=3³/₅×(6⁵/₈-4⁷/₈)=6,3
6⁵/₈-4⁷/₈=5¹³/₈-4⁷/₈=1¹³⁻⁷/₈=1⁶/₈=1³/₄
3³/₅×1³/₄=¹⁸/₅×⁷/₄=¹⁸ˣ⁷/₅ˣ₄=⁹ˣ⁷/₅ₓ₂=⁶³/₁₀=6,3

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гюйс

Verified answer

6 5/8 * 3 3/5 - 4 7/8 * 3 3/5=3 3/5 * (6 5/8 - 4 7/8)=18/5 * 1 3/4=18/5 * 7/4=9/5 * 7/2=63/10=6 3/10

0 votes Thanks 1

Answers & Comments

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-0,9+х= -1 ; 4...

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