Matematika Sekolah Menengah Pertama sederhanakanlah !

1. 7 1/2 : 5 1/5 =

2. 2km : 40m =

sederhanakanlah !

1. 7 1/2 : 5 1/5 =

2. 2km : 40m =

[tex] \rm7 \dfrac{1}{2} : 5 \dfrac{1}{5} [/tex]

[tex] \rm =7 \dfrac{1}{2} \div 5 \dfrac{1}{5} [/tex]

[tex] \rm = \dfrac{15}{2} \div \dfrac{26}{5} [/tex]

[tex] \rm = \dfrac{15}{2} \times \dfrac{5}{26} [/tex]

[tex] \rm = \dfrac{15 \times 5}{2 \times 26} [/tex]

[tex] \rm = \dfrac{75}{52} [/tex]

[tex] \rm = \red{ \bold{75 : 52}}[/tex]

[tex] \: [/tex]

1 km = 1.000 meter

______

2 km : 40 m

= (2 × 1.000) : 40

= 2.000 : 40

= (2.000 ÷ 40) : (40 ÷ 40)

= 50 : 1

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