A. (1 - 0.25) × 4/9
B. 5.8 - (8/5 × 2)
C. 9 + (3/2 + 0.7) : 2
E. 2.5 × 4 - (2 - 5/6)
F. 6.9 : (2 + 1) × 10 - 1/2
tolong dijawab pakai step by step ya
B. 5.8 - (8/5 × 2)
C. 9 + (3/2 + 0.7) : 2
E. 2.5 × 4 - (2 - 5/6)
F. 6.9 : (2 + 1) × 10 - 1/2
tolong dijawab pakai step by step ya
Jawaban:
a 0.33
Penjelasan dengan langkah-langkah:
A. (1 - 0.25) × 4/9
[tex](1 - 0.25) \times \frac{4}{9} = 0.5 \times \frac{4}{9} = 0.083 \times 4 = 0.33 \\ [/tex]
B. 5.8 - (8/5 × 2)
[tex]5.8 - ( \frac{8}{5} \times 2) = 40 - (1.6 \times 2 = 3.2) = 40 - 3.2 = 26.8[/tex]
C. 9 + (3/2 + 0.7) : 2
[tex]9 + ( \frac{3}{2} + 0.7) \div 2 \\ = 9 + ( \frac{3}{2} + \frac{1.4}{2} = \frac{4.4}{2} = 2.2) \div 2 \\ = 9 + 2.2 \div 2 \\ = 9 + 1.1 \\ = 10.1[/tex]
E. 2.5 × 4 - (2 - 5/6)
[tex]2.5 \times 4 - (2 - \frac{5}{6} ) \\ biar \: cepat \\ = 5 - ( \frac{12}{6} - \frac{5}{6} = \frac{7}{6} ) \\ = 5 - \frac{7}{6} \\ = \frac{30}{6} - \frac{7}{6} \\ = \frac{28}{6} = \frac{14}{3} \\ = 4 \frac{2}{3} atau \: 4.6[/tex]
F. 6.9 : (2 + 1) × 10 - 1/2
[tex]6.9 \div (2 + 1) \times 10 - \frac{1}{2} \\ = 6.9 \div 3 \times 10 - \frac{1}{2} \\ = 2.3 \times 10 - \frac{1}{2} \\ = 23 - \frac{1}{2} \\ = \frac{46}{2} - \frac{1}{2} \\ = \frac{45}{2} = 22 \frac{1}{2} \\ atau \: 22.5[/tex]
jadikanjawabanterbaik☝