(1-7/9)x(5.2-0.8)=
(⁹/₉ -⁷/₉)·4,4=
²/₉ ·⁴⁴/₁₀ =
⁸⁸/₉₀ = ⁴⁴/₄₅
(6.25-2 1/2):2.1/7-1 =
(6,25 -2,5)÷2¹/₇ -1=
3,75 ÷¹⁵/₇ -1=
3¾ ÷ ¹⁵/₇ -1=
¹⁵/₄ · ⁷/₁₅ -1=
⁷/₄ -1=
1¾ -1=
¾
8.5+3:5-3:5=
8,5+0,6-0,6=
8,5
9.4/5x3/7+2/9x0.9=
⁴⁹/₅ · ³/₇ + ²/₉ · ⁹/₁₀ =
²¹/₅ + ⅕=
²²/₅ =
4⅖
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(1-7/9)x(5.2-0.8)=
(⁹/₉ -⁷/₉)·4,4=
²/₉ ·⁴⁴/₁₀ =
⁸⁸/₉₀ = ⁴⁴/₄₅
(6.25-2 1/2):2.1/7-1 =
(6,25 -2,5)÷2¹/₇ -1=
3,75 ÷¹⁵/₇ -1=
3¾ ÷ ¹⁵/₇ -1=
¹⁵/₄ · ⁷/₁₅ -1=
⁷/₄ -1=
1¾ -1=
¾
8.5+3:5-3:5=
8,5+0,6-0,6=
8,5
9.4/5x3/7+2/9x0.9=
⁴⁹/₅ · ³/₇ + ²/₉ · ⁹/₁₀ =
²¹/₅ + ⅕=
²²/₅ =
4⅖