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Nomor 11.

3(2x – 4) = 4(2x – 1)

6x – 12 = 8x – 4

-2x = 8

x = -4

k + 3 = -4 + 3

= -1

Opsi : –

Nomor 12.

(4x – 1) = (5x – 2)

-x = -1

x = 1

Panjang diagonal

= (4x – 1)

= 4(1) – 1

= 4 – 1

= 3 meter

Opsi : A

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Mapel : Matematika

Kelas : 7

Bab : Persamaan Variabel

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~Solved By Noellmantap~