Tentukan Himpunan 2x-y=14 x + 4y = 48dengan metode Substutisi

jawab

2x- y = 14
y = 14 - 2x sub k  x + 4y = 48
x + 4(14 - 2x) =  48
x + 56 - 8x = 48
- 7x = -8
x = 8/7

y = 14 - 2x
y  = 14 - 2(8/7)
y = 14 - 16/7
y = 11 ⁵/₇