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6 out of 7-5 out of 6 + 2 out of 3
6/7-（5/6+2/3）
12x (2 / 3 - 1 / 2 + 5 / 6). This is the formula
12x (2 / 3-1 / 2 + 5 / 6)
=2 / 12 × 3-1 / 12 × 2 + 5 / 12 × 6
=8-6+10
=12
Calculation: | - 16 | + | - 24 | + | + 30 | - 2.75 | - 2 and 2 / 15|
|-16|+|-24|+|+30|=16+24+30=70
|-2.75 times | - 2 and 2 / 15 | = 2.75 times 2 and 2 / 15 = 88 / 15
9 / x = 3 / 7 x: 3 / 4 = 1 / 2: 2 / 5
X/9=3/7’X=3/7×9=27/7,X：3/4=1/2：2/5’X=3/4×1/2÷2/5=15/16
RELATED INFORMATIONS
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