Jawab:

HP = {31 , 9}

Penjelasan dengan langkah-langkah:

#Cara Substitusi

(i). 5x + 2y = 173

(ii). 4x + 3y = 151

› Evaluasi pers (i)

(i). 5x + 2y = 173

» 5x = 173 - 2y

» x = 173/5 - 2/5 y

› Substitusikan nilai x, ke pers (ii)

(ii). 4x + 3y = 151

» 4(173/5 - 2/5 y) + 3y = 151

» 4 × 173/5 - 4 × 2/5 y + 3y = 151

» 692/5 - 8/5 y + 3y = 151

» 692/5 - 8/5 y + 15/5 y = 151

» 692/5 + 7/5 y = 151 | × 5

» 692 + 7y = 755

» 7y = 755 - 692

» 7y = 63

» y = 63/7

» y = 9 ✓

› Substitusikan nilai y, ke nilai x

x = 173/5 - 2/5 y

x = 173/5 - 2/5 (9)

x = 173/5 - 18/5

x = 155/5

x = 31 ✓

HP = {31 , 9}

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#Answer By : 4Rz