Question

Tentukan himpunan dari
x - 3y = -8
x + 2y = 12​

Answer 1

x - 3a = -8

x + 2a = 12​

x-3a=-8

x=12-2a

kita gantikan x dalam persamaan 1

12-2a-3a=-8

-5a=-8-12

a=4

kami mengira x:

x-3a=-8

x-12=-8

x=-8+12=4

penyelesaian (a;x =(4,4)

x - 3a = -8

x + 2a = 12​

x-3a=-8

x=12-2a

we substitute x in the 1st equation

12-2a-3a=-8

-5a=-8-12

a=4

we calculate x:

x-3a=-8

x-12=-8

x=-8+12=4

solution (a;x =(4,4)

Explanation: