Tolong ka jawab in ya ka soal nya 1 jam lagi dikumpul !! ​

Mapel : mmk
materi : ulangan ya dek :')

1. 4^x+1 = 8^x+1
=> (2^2)^x+1 = (2^3)^x+1
=> 2x + 2 = 3x + 3
=> 2x – 3x = 3 – 2
=> -x = 1
=> x = -1
2. 2^log3 – 2^log6 + 2^log8
=> 2^log3 – 2^log2 + 2^log3 + 2^log2^3
=> 2^log3 – 1 + 2^log3 + 3
=> -1 + 3 = 2
3. l5x -6l – 4 = 10
=> l5x -6l – 4 – 10 = 0
=>5x – 20 = 0
=>5x = 20
=>x=4
4. l6x-13l>5
=> 6x < 5 + 13
=> 6x < 18
=> x < 3
5. determinan / campuran
=> pertama eliminasi dulu persamaan 1 dan 2
=> x + y – z = -3
=> x + 2y + z = 7
____________+
2x + 3y = 4
=> kemudian elimnasi persamaan 2 dan 3
=> x + 2y + z = 7
=> 2x + y + z = 4
____________-
=> -x + y = 3 kalikan (-)
=> x – y = -3
kemudian eliminasi lagi persamaan yg dihasilkan, jadi
=> 2x + 3y = 4
=> x – y = -3 (masing2 kalikan 2)
=> 2x + 3y = 4
=> 2x – 2y = -6
___________-
=> 5y = 10 -> y = 2
kemudian subtitusi nilai y pada salah satu persamaan diatas
=> 2x – 2y = -6
=> 2x – 2(2) = -6
=> 2x – 4 = -6
=> 2x = -6 + 4
=> 2x = -2 -> x = -1
selanjutnya masukan masing2nilai x dan y pada salah satu persamaan
=> x + y – z = 3
=> – 1 + 2 – z = 3
=> 1 – z = 3
=> -z = 2
=> z = -2

no. 6 soalnya tdk terbaca :")