tentukan nilai variabel 1. 5x+7(3x+2)=6(4x+1) 2. -2x+5=-(x+9) 3. 18 +7x=2(3x-4) 4. 2x+3=7 5. 2(5-2x)=3(5-x) tlong di bantu ya

1. 5x + 7 ( 3x + 2) = 6 (4x + 1)
5x + 21x + 14 = 24x + 6
5x + 21x - 24x = 6 - 14
2x = -8
x = -8/2
x = -4
2. -2x + 5 = -(x + 9)
-2x + x = 9 - 5
-x = 4
x = -4
3. 18 + 7x = 2 (3x - 4)
18 + 7x = 6x - 8
7x - 6x = -8 - 18
x = -26
4. 2x + 3 = 7
2x = 7 - 3
2x = 4
x = 4/2
x = 2
5. 2 (5 - 2x) = 3 (5 - x)
10 - 4x = 15 - 3x
- 4x + 3x = 15 - 10
x = 5


Maaf kalo jawabannya ada yang salah -,-

. koreksi lagi ya.. takutnya ada yang salah