Jawaban:
31
Penjelasan dengan langkah-langkah:
Tentukan Persamaan
3x + 7y = 161.....Pers 1
4x + 6y = 158....Pers 2
Eliminasi x Pers 1 & 2
3x + 7y = 161. | 4 | 12x + 28y = 644
4x + 6y = 158 | 3 | 12x + 18y = 474
______________-
10y = 170
y = 170/10
= 17 → Y
Masukkan Y Kedalam Pers 1 agar dapat nilai X
3x + 7y = 161
3x + 7(17) = 161
3x + 119 = 161
3x = 161 - 119
3x = 42
x = 42/3
= 14 → X
Maka X + Y = 14 + 17 = 31
SPLDV
3x + 7y = 161 |×4|12x + 28y = 644
4x + 6y = 158|×3|12x + 18y = 474
___________ _
y = 17
4x + 6y = 158
4x + 6 (17) = 158
102 - 158 = - 4x
-56 = -4x
14 = x
x + y
= 14 + 17
= 31
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Verified answer
Jawaban:
31
Penjelasan dengan langkah-langkah:
Tentukan Persamaan
3x + 7y = 161.....Pers 1
4x + 6y = 158....Pers 2
Eliminasi x Pers 1 & 2
3x + 7y = 161. | 4 | 12x + 28y = 644
4x + 6y = 158 | 3 | 12x + 18y = 474
______________-
10y = 170
10y = 170
y = 170/10
= 17 → Y
Masukkan Y Kedalam Pers 1 agar dapat nilai X
3x + 7y = 161
3x + 7(17) = 161
3x + 119 = 161
3x = 161 - 119
3x = 42
x = 42/3
= 14 → X
Maka X + Y = 14 + 17 = 31
Penjelasan dengan langkah-langkah:
SPLDV
3x + 7y = 161 |×4|12x + 28y = 644
4x + 6y = 158|×3|12x + 18y = 474
___________ _
10y = 170
y = 17
4x + 6y = 158
4x + 6 (17) = 158
102 - 158 = - 4x
-56 = -4x
14 = x
x + y
= 14 + 17
= 31