Bagaimana cara menyelesaikan

Jawaban:

x = 10

y = -2

Penjelasan dengan langkah-langkah:

Metode Substitusi

2x + 5y = 10

x + 4y = 2 → x = 2 – 4y

maka,

•2x + 5y = 10

= 2(2 – 4y) + 5y = 10

= 4 – 8y + 5y = 10

= -3y = 10 – 4

= -3y = 6

y = 6 ÷ –3

y = –2

•x + 4y = 2

= x + 4(–2) = 2

= x + –8 = 2

= x = 2 + 8

= x = 10