Question

A) (⅔*7+2¼-1⅚): 3²/₉=

b) 2⅜+1,75-(¹⁵/₂₅*7,5)=

Answer 1

A) (⅔*7+2¼-1⅚): 3²/₉=2/3 *7/1 + 9/4-11/6=14/3 +54/24 - 44/24=14/3+10/24

b) 2⅜+1,75-(¹⁵/₂₅*7,5)=

Answer 2

Pzdr

Answer 3

A) (⅔*7+2¼-1⅚): 3²/₉=
=(4¹⁶/₂₄+2 ⁶/₂₄- 1 ²⁰/₂₄):3²/₉=
=5¹/₁₂ : 3 ²/₉=
=⁶¹/₁₂ : ²⁹/₉=
= ⁶¹/₁₂* ⁹/₂₉=
=⁵⁴⁹/₃₄₈=
=1 ²⁰¹/₃₄₈

b) 2⅜+1,75-(¹⁵/₂₅*7,5)=
=⁸⁵/₄₀ + ⁷⁰/₄₀-(²⁴/₄₀*³⁰⁰/₄₀)=
=¹⁵⁵/₄₀-⁷²⁰⁰/₁₆₀=
=¹⁵⁵/₄₀-¹⁸⁰/₄₀=
= -²⁵/₄₀=
= -⁵/₈