1.4z – 5 / 2=z + 21/4
2.2 1/4 + 5 (1- y)=2(1/3-2y)
3.y + 3 / 2 – 5 = 1- y/2
sama caranya ya….
Tentukan himpunan penyelesaian persamaan-persamaan berikut jika variabel pada himpunan bilangan rasional.
Jawaban Terkonfirmasi
1. 4z – 5/2 = z + 21/4
4z – z = 21/4 + 5/2
3z = 21/4 + 10/4
3z = 31/4
z = 31/4 : 3
z = 31/12
2. 2 1/4 + 5(1-y) = 2(1/3 – 2y)
9/4 + 5 – 5y = 2/3 – 4y
9/4 + 20/4 – 2/3 = -4y + 5y
29/4 – 2/3 = y
87/12 – 8/12 = y
79/12 = y
3. y + 3/2 – 5 = 1 – y/2
y + y/2 = 1 – 3/2 + 5
2y + y = 2(6 – 3/2)
3y = 12 – 6/2
3y = 12 – 3
3y = 9
y = 3