1.) 2¼ + 3⅐ × 1⅚ = ...
2.) 1¾ ÷ 1½ × 2⅘ = ...
3.) 1½ + 1½ - ½ = ...
[tex]\huge{ \red { \underline{ \red{ \underline {\bf \color{navy}{ᴀ᭄ɴsᴡᴇʀ:-}}}}}}[/tex]
- SOAL 1
[tex] \sf2 \frac{1}{4} + 3 \frac{1}{7} \times 1 \frac{5}{6} [/tex]
[tex] \sf = \frac{9}{4} + \frac{22}{7} \times \frac{11}{6} [/tex]
[tex] = \sf \frac{9}{4} + \frac{242}{42} [/tex]
[tex] = \sf \frac{189}{84} + \frac{484}{84} [/tex]
[tex] \sf = \frac{673}{84} [/tex]
[tex] \sf = \textcolor{red}{ \sf\: 8 \frac{1}{84}}[/tex]
- SOAL 2
[tex]\sf1 \frac{3}{4} \div 1 \frac{1}{2} \times 2 \frac{4}{5}[/tex]
[tex]\sf = \frac{7}{4} \div \frac{3}{2} \times \frac{14}{5} [/tex]
[tex] = \frac{7}{4} \times \frac{2}{3} \times \frac{14}{5} [/tex]
[tex] \sf = 7 \times \frac{1}{3} \times \frac{7}{5} [/tex]
[tex] \sf = \frac{49}{15} [/tex]
[tex] = \textcolor{red}{ \sf\: 3 \frac{4}{15}}[/tex]
- SOAL 3
[tex] \sf1 \frac{1}{2} + 1 \frac{1}{2} - \frac{1}{2} [/tex]
[tex] \sf = \frac{3}{2} + \frac{3}{2} - \frac{1}{2} [/tex]
[tex] \sf = \frac{3 + 3 + 1}{2} [/tex]
[tex] \sf = \frac{6 - 1}{2} [/tex]
[tex] = \sf \frac{5}{2} [/tex]
[tex] \sf = \textcolor{red}{ \sf\: 2 \frac{1}{2}}[/tex]
Penjelasan dengan langkah-langkah:
1.) 2¼ + 3⅐ × 1⅚
= 9/4 + 22/7 × 11/6
= 9/4 + 242/42
= 189/84 + 484/84
= 673/84
= 8 ¹/84
2.) 1¾ ÷ 1½ × 2⅘
= 7/4 ÷ 3/2 × 14/5
= 7/4 × 2/3 × 14/5
= 196/60
= 3 ⁴/15
3.) 1½ + 1½ - ½
= 3/2 + 3/2 – 1/2
= (3+3–1)/2
= 5/2
