Kuis
Dik:
3x + 7y - 2z = 7
2x - 4y + z = 3
Jika x = 3z - 7, Maka y = ...
a. 2x - 3
b. z + 1
c. ²log x
d. [tex] {3}^{2z} [/tex]
#Batere sisa 5%
Dik:
3x + 7y - 2z = 7
2x - 4y + z = 3
Jika x = 3z - 7, Maka y = ...
a. 2x - 3
b. z + 1
c. ²log x
d. [tex] {3}^{2z} [/tex]
#Batere sisa 5%
Verified answer
Penjelasan dengan langkah-langkah:
3x + 7y - 2z = 7
2x - 4y + z = 3
x = 3z - 7
3(3z-7) + 7y - 2z = 7
9z-21+7y-2z = 7
7z+7y = 28
z + y = 4
2(3z-7) -4y + z = 3
6z-14-4y+z = 3
7z-4y = 17
7z - 4(4-z) = 17
7z - 16 + 4z = 17
11z = 33
z = 3
x = 3(3) - 7
x = 9-7
x = 2
z + y = 4
3 + y = 4
y = 1
x = 2
y = 1
z = 3
a ) 2x - 3
= 2(2) - 3
= 1 ✓
b ) z + 1
= 3 + 1
= 4
c ) ²log x
= ²log 2
= 1 ✓
d ) 3^2z
= 3^6
Maka jawabannya adalah A dan C