Matematika 10y + 7y - 20 y = 10 20x - 15x × 26² = ?_.​

jewellgreenholtulv – June 09, 2023

10y + 7y - 20
y = 10

20x - 15x × 26² = ?


_.​

Penjelasan dengan langkah-langkah:

= 10.10 + 7.10 - 20

= 100 + 70 - 20

= 170 - 20

= 150

__

= 20.5 - 15.5 × 26²

= 100 - 75 × 676

= 100 - 50.700

= - 50.600

[tex] \blue{\underbrace{\pink{\huge\tt{Penyelesaian }}}}[/tex]

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• Nomor 1 :

• [tex] \tt10y + 7y - 20[/tex]

[tex] \tt{y = 10}[/tex]

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= 10(10) + 7(10) - 20

= (10 × 10) + (7 × 10) - 20

= 100 + 70 - 20

= 170 - 20

= 150 ✔

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• Nomor 2 :

• [tex] \tt20x - 15x \times {26}^{2} [/tex]

[tex] \tt{x = 5}[/tex]

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= 20(5) - 15(5) × 26²

= (20 × 5) - (15 × 5) × (26 × 26)

= 100 - 75 × 676

= 100 - 50.700

= -50.600 ✔

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