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No. 1
3/4 + (-2/3) : 2
= 3/4 + (-2/3 : 2)
= 3/4 + (-2/3 : 2/1)
= 3/4 + (-2/3 × 1/2)
= 3/4 + (-2/6)
= 9/12 - 4/12
= 5/12
No. 2
7/9 - (-1/3)²
= 7/9 - (-1/9)
= 7/9 + 1/9
= 8/9
Axlya :)
Penjelasan dengan langkah-langkah:
[tex] 1. \: \: \: \frac{3}{4} + ( - \frac{2}{3} ) \div 2 \\ = \frac{3}{4} + ( - \frac{2}{3} ) \times \frac{1}{2} = \frac{3}{4} + ( - \frac{1}{3} ) = \frac{3.3}{4.3} - \frac{1.4}{3.4} = \frac{9}{12} - \frac{4}{12} = \frac{5}{12} \\ \\ 2. \: \: \: \frac{7}{9} - ( - \frac{1}{3} ) {}^{2} = \frac{7}{9} - ( - \frac{1}{9} ) = \frac{7}{9} + \frac{1}{9} = \frac{8}{9} [/tex]
[answer.2.content]
